Method and system for transmission and reception of punctured convolutionally encoded data

Claim 2

A time-diversity transmission and reception system according to claim 1 comprising a transmission device and a receiving device, said transmission device comprising: (1) a first convolutional coding means for outputting a series of input data by convolution-coding said series of data; (2) a first multiple puncturing pattern generation means for generating a predetermined plural form of puncturing patterns having an identical puncturing rate, but different in block pattern of puncturing with one another; (3) a first puncturing means for puncturing a series of convolution-coded data output by said first convolutional coding means by using each of said predetermined plural form of puncturing patterns supplied by said first multiple puncturing pattern generation means, and outputting a predetermined plurality of different series of punctured data; (4) a diversity transmission timing control means for outputting a diversity transmission timing control signal for carrying out transmission for a plural number of times at intervals of a predetermined time; (5) a time-diversity modulation / transmission means for modulating and transmitting, as time-diversity transmission data, said predetermined plurality of different series of punctured data output by said first puncturing means one by one at intervals of the predetermined time in response to said diversity transmission timing control signal, and said receiving device comprising: (1) a diversity reception timing control means for outputting a predetermined diversity reception timing control signal for carrying out reception of a signal transmitted with time diversity transmission at intervals of said predetermined time; (2) a time-diversity reception / demodulation means for receiving and demodulating each of the signals transmitted for a plural number of times by said transmission device, in response to said diversity reception timing control signal, and outputting individual series of demodulated data; (3) a second multiple puncturing pattern generation means for generating puncturing patterns, which are identical to the predetermined plural form of puncturing patterns generated by said first multiple puncturing pattern generation means; (4) a first depuncturing means for depuncturing each of the series of demodulated data in quantity corresponding to the predetermined number of diversity receptions output from said time-diversity reception / demodulation means by using the predetermined different form of puncturing patterns supplied by said second multiple puncturing pattern generation means, and outputting a plural number of series of depunctured data; (5) a first compounding means for compounding the predetermined plural number of series of depunctured data output by said first depuncturing means, symbol by symbol in a unit of block, and outputting a result of compounding; and (6) a first convolutional decoding means for convolution-decoding said result of compounding, and outputting a decoded data, wherein said time-diversity transmission and reception system executes time-diversity transmission and reception of a plurality of different series of error-correction code word, as individual diversity branch data, obtained by puncturing and convolution-coding identical series of information data with the plurality of different forms of puncturing patterns.

Claim 3

The time-diversity transmission and reception system according to claim 2, wherein: (1) said series of demodulated data output by said time-diversity reception / demodulation means are digital values quantized with a predetermined number of bits; (2) said depuncturing on punctured locations carried out by said first depuncturing means is a process of inserting a middle value between two digital values corresponding to a mark and a space; (3) said compounding by said first compounding means is a process of addition of a digital value to said series of depunctured data in the predetermined plural number output by said first depuncturing means, symbol by symbol in a unit of block; and (4) said first convolutional decoding means defines Viterbi soft quantization means for executing Viterbi soft decision.

Claim 4

The time-diversity transmission and reception system according to claim 2, wherein puncturing locations in said predetermined plural form of puncturing patterns generated by said first multiple puncturing pattern generation means are set in advance in a manner not to overlap among said plurality of patterns.

Claim 5

The time-diversity transmission and reception system according to claim 2, wherein said first multiple puncturing pattern generation means comprises a first reference matrix generation means for generating a reference matrix of puncturing pattern, and a first matrix conversion means for outputting a different puncturing pattern for each diversity branch by converting any one or more of rows, columns and elements of said reference matrix.

Claim 6

The time-diversity transmission and reception system according to claim 5, wherein said second multiple puncturing pattern generation means comprises a second reference matrix generation means having the same function as said first reference matrix generation means, and a second matrix conversion means having the same function as said first matrix conversion means with relation to a reference matrix generated by said second reference matrix generation means.

Claim 7

The time-diversity transmission and reception system according to claim 2, further comprising: (1) a reception level memory means for measuring a reception level at every timing of diversity reception in said time-diversity reception / demodulation means, and storing a result of measurement; and (2) a weighting / compounding means, replacing said first compounding means, for compounding after weighting the series of depunctured data of a predetermined number of times output by said first depuncturing means according to the reception level for each of every diversity branches stored in said reception level memory means, and outputting a result of compounding.

Claim 8

A time-diversity transmission and reception system according to claim 1, comprising a transmission device and a receiving device, said transmission device comprising: (1) a first convolutional coding means for outputting a series of input data by convolution-coding said series of data; (2) a first multiple puncturing pattern generation means for generating a predetermined plural form of puncturing patterns having an identical puncturing rate, but different in block pattern of puncturing with one another; (3) a first puncturing means for puncturing a series of convolution-coded data output by said first convolutional coding means by using each of said predetermined plural form of puncturing patterns supplied by said first multiple puncturing pattern generation means, and outputting a predetermined plurality of different series of punctured data; (4) a first code division multiplex signal transmission means for transmitting said predetermined plurality of different series of punctured data by code division multiplexing simultaneously, and said receiving device comprising: (1) a first code division multiplex signal reception means for receiving and demodulating a signal transmitted with said code division multiplexing, and outputting individual multiplexed series of demodulated data; (2) a second multiple puncturing pattern generation means for generating puncturing patterns, which are identical to the predetermined plural form of puncturing patterns generated by said first multiple puncturing pattern generation means; (3) a first depuncturing means for depuncturing each of the series of demodulated data in quantity corresponding to the predetermined number of diversity receptions output from said first code division multiplex signal reception means by using the predetermined different form of puncturing patterns supplied by said second multiple puncturing pattern generation means, and outputting a plural number of series of depunctured data; (4) a first compounding means for compounding the predetermined plural number of series of depunctured data output by said first depuncturing means, symbol by symbol in a unit of block, and outputting a result of compounding; and (5) a first convolutional decoding means for convolution-decoding said result of compounding, and outputting a decoded data, wherein said time-diversity transmission and reception system executes code division multiplex transmission and reception of a plurality of different series of error-correction code word obtained by puncturing and convolution-coding identical series of information data with the plurality of different forms of puncturing patterns.

Claim 9

The transmission and reception system according to claim 1 comprising a plurality of transmission devices for transmitting series of identical information data, and a receiving device for receiving a plurality of signals transmitted by said transmission devices, each of said plurality of transmission devices comprising: (1) a second convolutional coding means for convolution-coding and outputting said series of identical information input data; (2) a first puncturing pattern generation means for generating a puncturing pattern having an identical puncturing rate, but different in block pattern from a puncturing pattern generated in any other of said plurality of transmission devices; (3) a second puncturing means for puncturing a series of convolution-coded data output by said second convolutional coding means by using the puncturing pattern supplied by said first puncturing pattern generation means, and outputting a series of punctured data; (4) a first transmission control means for outputting information of a predetermined transmission timing and a predetermined transmission frequency for said transmission device to execute a transmission; and (5) a first modulation / transmission means for modulating and transmitting said series of punctured data in response to said information of transmission timing and transmission frequency, and said receiving device comprising: (1) a first reception control means for supplying information of a predetermined reception timing and a predetermined reception frequency for carrying out reception of individual signals transmitted by said plurality of transmission devices in said predetermined transmission timing and said predetermined transmission frequency; (2) a first reception / demodulation means for receiving and demodulating the signal transmitted by each of said transmission devices in response to information of said predetermined reception timing and said predetermined reception frequency supplied from said first reception control means, and outputting individual series of demodulated data; (3) a third multiple puncturing pattern generation means for generating a plural form of puncturing patterns, which are identical to the individual puncturing patterns of said plurality of transmission devices; (4) a second depuncturing means for depuncturing each of the series of demodulated data output by said first reception / demodulation means by using a puncturing pattern that is identical to the one used by said transmission device among said predetermined plural form of puncturing patterns supplied from said third multiple puncturing pattern generation means, and outputting individual series of depunctured data; (5) a second compounding means for compounding said plural series of depunctured data output by said second depuncturing means, symbol by symbol in a unit of block, and outputting a result of compounding; and (6) a second convolutional decoding means for convolution-decoding said result of compounding, wherein said transmission and reception system sets said transmission frequencies approximately equal and selects said transmission timings in a such manner not to overlap among said plurality of transmission devices in advance with said first transmission control means, and executes transmissions in different timings with one another by punctured-convolution-coding said series of identical information data individually with different puncturing patterns when transmitting said series of identical information data by said plurality of transmission devices.

Claim 10

The transmission and reception system according to claim 9, wherein: (1) said first transmission control means in said plurality of transmission devices are replaced by second transmission control means, in which transmission timings are set to be approximately equal and transmission frequencies are selected in a such manner not to overlap among said plurality of transmission devices, in advance; and (2) said first reception control means in said reception device is replaced by a second reception control means, in which reception timings and reception frequencies are set in advance to correspond with said transmission timings and said transmission frequencies of said second transmission control means.

Claim 11

The transmission and reception system according to claim 9, wherein: (1) said first transmission control means in said plurality of transmission devices are replaced by third transmission control means, in which both transmission timings and transmission frequencies are set in advance in a such manner not to overlap among said plurality of transmission devices; and (2) said first reception control means in said reception device is replaced by a third reception control means, in which reception timings and reception frequencies are set in advance to correspond with said transmission timings and said transmission frequencies of said third transmission control means.

Claim 12

The transmission and reception system according to claim 9, wherein: (1) said first transmission control means in said plurality of transmission devices are replaced by fourth transmission control means, in which both transmission timings and transmission frequencies are set in advance to be approximately equal among said plurality of transmission devices; (2) said first modulation / transmission means are replaced by second code division multiplex signal transmission means for modulating and transmitting said series of punctured data output by said second puncturing means with code division multiplexing in response to information of transmission timings and transmission frequencies supplied from said fourth transmission control means; (3) said first reception control means in said reception device is replaced by a fourth reception control means, in which reception timings and reception frequencies are set in advance to correspond with said transmission timings and said transmission frequencies of said fourth transmission control means; and (4) said first reception / demodulation means is replaced by a second code division multiplex signal reception means for receiving and demodulating a plurality of transmission signals transmitted with said code-division multiplexing by way of a despreading process according to information of said reception timings and said reception frequencies supplied from said fourth reception control means, and outputting an individual series of extracted demodulated data.

Claim 13

The transmission and reception system according to claim 1, comprising a transmission device, a plurality of receiving devices for receiving a signal output by said transmission device, and an output processing device for accumulating series of data received in said plurality of receiving devices, said transmission device comprising: (1) a third convolutional coding means for outputting a series of input data by convolution-coding said series of data; (2) a fourth multiple puncturing pattern generation means for generating and outputting a predetermined plural form of puncturing patterns having an identical puncturing rate, but different in block pattern of puncturing with one another; (3) a third puncturing means for puncturing a series of convolution-coded data output by said third convolutional coding means by using each of said predetermined plural form of puncturing patterns supplied by said fourth multiple puncturing pattern generation means, and outputting a predetermined plurality of different series of punctured data; (4) a fifth transmission control means for outputting information of a predetermined transmission timing and a predetermined transmission frequency for said transmission device; and (5) a second modulation / transmission means for modulating and transmitting each of said predetermined plurality of different series of punctured data supplied from said third puncturing means in response to the information of said transmission timing and said transmission frequency, each of said plurality of receiving devices comprising: (1) a fifth reception control means for outputting information of a predetermined transmission timing and a predetermined transmission frequency for carrying out reception of individual transmission signals addressed to each of said receiving devices out of a plurality of signals transmitted by said transmission device in said predetermined transmission timing and said predetermined transmission frequency; (2) a second reception / demodulation means for executing reception and demodulation according to information of said predetermined reception timing and said predetermined reception frequency supplied from said fifth reception control means, and outputting a series of demodulated data; (3) a second puncturing pattern generation means for generating a puncturing pattern, which is identical to the one used in the transmission addressed to each of said receiving devices out of said predetermined plural form of puncturing patterns generated by said fourth multiple puncturing pattern generation means; and (4) a third depuncturing means for depuncturing said series of demodulated data by using the puncturing pattern supplied by said second puncturing pattern generation means, and outputting a series of depunctured data, and said output processing device comprising: (1) a third compounding means for compounding said series of depunctured data obtained by each of said plurality of receiving devices, symbol by symbol in a unit of block; and (2) a third convolutional decoding means for convolution-decoding a result of compounding output by said third compounding means, wherein the information of said transmission timings supplied by said fifth transmission control means are arranged in a such manner that said individual transmissions do not overlap, and that the information of said transmission frequency are approximately equal among said individual transmissions.

Claim 14

The transmission and reception system according to claim 13, wherein: (1) said fifth transmission control means in said transmission device is replaced by a sixth transmission control means, in which individual transmission timings are set to be approximately equal and transmission frequencies are selected in a such manner not to overlap among individual transmissions of a predetermined number of times, in advance; and (2) said fifth reception control means in said plurality of receiving devices are replaced by sixth reception control means, in which reception timings and reception frequencies for each of said receiving devices are set in advance to correspond with said transmission timings and said transmission frequencies assigned for individual receiving devices in said sixth transmission control means.

Claim 15

The transmission and reception system according to claim 13, wherein: (1) said fifth transmission control means in said transmission device is replaced by a seventh transmission control means, in which both transmission timings and transmission frequencies are set in advance in a such manner not to overlap among individual transmissions of a predetermined number of times; and (2) said fifth reception control means in said plurality of reception devices are replaced by seventh reception control means, in which reception timings and reception frequencies for each of said reception devices are set in advance to correspond with said transmission timings and said transmission frequencies assigned to each of said reception devices in said seventh transmission control means.

Claim 16

The transmission and reception system according to claim 13, wherein: (1) said fifth transmission control means in said transmission device is replaced by an eighth transmission control means, in which both transmission timings and transmission frequencies are set in advance to be approximately equal among individual transmissions of a predetermined number of times; (2) said second modulation / transmission means is replaced by a third code division multiplex signal transmission means for modulating and transmitting said predetermined plurality of different series of punctured data with code division multiplexing in response to information of transmission timings and transmission frequencies supplied from said eighth transmission control means; (3) said fifth reception control means are replaced by eighth reception control means, in which reception timing and reception frequency for each of said reception devices are set in advance to correspond with said transmission timings and said transmission frequencies of said eighth transmission control means; and (4) said second reception / demodulation means are replaced by third code division multiplex signal reception means for receiving and demodulating said signals transmitted with code-division multiplexing by extracting only a signal addressed to each of said receiving devices according to information of the predetermined reception timings and the predetermined reception frequencies supplied from said eighth reception control means, and outputting a series of demodulated data.

Claim 17

A satellite-path diversity transmission and reception system according to claim 1, comprising a transmission earth station, a receiving earth station, and a plurality of satellite repeater stations, wherein communication is made from said transmission earth station to said receiving earth station via said plurality of satellite repeater stations, said transmission earth station being provided with an earth station transmission device comprising: (1) a fourth convolutional coding means for outputting a series of input data by convolution-coding said series of data; (2) a fifth multiple puncturing pattern generation means for generating a predetermined plural form of puncturing patterns having an identical puncturing rate, but different in block pattern of puncturing with one another; (3) a fourth puncturing means for puncturing a series of convolution-coded data output by said fourth convolutional coding means by using each of said predetermined plural form of puncturing patterns supplied by said fifth multiple puncturing pattern generation means, and outputting a predetermined plurality of different series of punctured data; and (4) an earth station modulation / transmission means for transmitting each of said predetermined plurality of different series of punctured data to said plurality of satellite repeater stations, one series of data after another, and said receiving earth station being provided with an earth station receiving device comprising: (1) an earth station reception / demodulation means for receiving individual signals transmitted from said transmission earth station via said plurality of satellite repeater stations, and outputting individual series of demodulated data; (2) a sixth multiple puncturing pattern generation means for generating a predetermined plural form of puncturing patterns, which are identical to the puncturing patterns of said fifth multiple puncturing pattern generation means; (3) a fourth depuncturing means for depuncturing each of said predetermined plurality of different series of demodulated data output from said earth station reception / demodulation means by using each of said predetermined plurality of different puncturing patterns supplied by said sixth multiple puncturing pattern generation means, and outputting the plural number of series of depunctured data; (4) a fourth compounding means for compounding the predetermined plural number of series of depunctured data output by said fourth depuncturing means, symbol by symbol in a unit of block, and outputting a result of compounding; and (5) a fourth convolutional decoding means for convolution-decoding said result of compounding output by said fourth compounding means, and outputting a decoded data, wherein said satellite-path diversity transmission and reception system punctured-convolution-codes identical series of information data with different forms of puncturing patterns, and executes path-diversity transmission and reception of an obtained plurality of different series of error-correction code word, as individual diversity branch data via said plurality of satellite repeater stations.

Claim 18

The satellite-path diversity transmission and reception system according to claim 1, comprising a plurality of earth stations and a plurality of satellite repeater stations, wherein said plurality of earth stations communicate with one another via said plurality of satellite repeater stations, and each of said plurality of earth stations comprises both of the earth station transmission device and the earth station reception device as recited in claim 17.

Claim 19

A transmission device comprising: (1) a convolutional coding means for convolution-coding a series of input data, and outputting a series of convolution-coded data; (2) a puncturing means for puncturing said series of convolution-coded data by using a plural form of puncturing patterns individually, and outputting a plurality of series of punctured data; and (3) a modulation / transmission means for modulating and transmitting said plurality of series of punctured data.

Claim 20

A receiving device comprising: (1) a reception / demodulation means for receiving and demodulating a signal transmitted by a transmission source via a communication pathway, and outputting a plural variety of series of demodulated data; (2) a depuncturing means for depuncturing said plural variety of series of demodulated data individually by using puncturing patterns that are identical to what have been used by said transmission source, and outputting a plural variety of series of depunctured data; (3) a compounding means for compounding said plural variety of series of depunctured data, and outputting a result of compounding; and (4) a convolutional decoding means for convolution-decoding said result of compounding, and outputting a decoded data.

Claim 21

A transmission and reception device comprising a transmitter and a receiver, said transmitter comprising: (1) a convolutional coding means for convolution-coding a series of input data, and outputting a series of convolution-coded data; (2) a puncturing means for puncturing said series of convolution-coded data by using a plural form of puncturing patterns individually, and outputting a plurality of series of punctured data; and (3) a modulation / transmission means for modulating and transmitting said plurality of series of punctured data, and said receiver comprising: (1) a reception / demodulation means for receiving and demodulating a signal transmitted by a transmission source via a communication pathway, and outputting a plural variety of series of demodulated data; (2) a depuncturing means for depuncturing said plural variety of series of demodulated data individually by using puncturing patterns that are identical to what have been used by said transmission source, and outputting a plural variety of series of depunctured data; (3) a compounding means for compounding said plural variety of series of depunctured data, and outputting a result of compounding; and (4) a convolutional decoding means for convolution-decoding said result of compounding, and outputting a decoded data.