US6510133B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-carrier transmission method and data transmitter
Assignee: Panasonic Holdings Corp
•
Filing: 1998-05-28
•
Granted: 2003-01-21
•
Expires: 2018-05-28
Abstract
Abstract Equipped with a plurality of mapping blocks 102 and 103 that carry out mappings of different rates, signals subjected to low-speed mapping are placed in the periphery of a band to which a plurality of sub-carriers are assigned at an interval corresponding to the symbol rate. The signal placed on the frequency axis in this way is converted to a time waveform through inverse Fourier transformation block 105, converted to a symbol time series through parallel/serial conversion block 106, then quadrature-modulated and transmitted.
Inventors
- 👤 Mitsuru Uesugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:55
CPC Classifications
H; H04; H04J; H04J11/00; H04L; H04L27/00; H04L27/26; H04L27/2601; H04L27/2602; H04L27/2605; H04L27/2604; H04L5/00; H04L5/0001; H04L5/0003; H04L5/0005; H04L5/0007; H04L5/003; H04L5/0044; H04L5/0046; H04L27/2626
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
A multi-carrier transmission method, comprising: assigning high-rate data to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band; assigning low-rate data to second sub-carriers, orthogonal to the first sub-carriers, set on guard frequency bands on both sides of the specific frequency band; and concurrently transmitting the high-rate data and the low-rate data.
Claim 2
Dependent Claim
58 words
A multi-carrier transmission method, comprising: assigning high-rate data to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band; assigning low-rate data to second sub-carriers, orthogonal to the first sub-carriers, set on guard frequency bands on both sides of the specific frequency band; and concurrently transmitting the high-rate data and the low-rate data.
Claim 3
Dependent Claim
27 words
The multi-carrier transmission method according to claim 1 , wherein a transmission rate of the low-rate data is ½ n a transmission rate of the high-rate data.
Claim 4
Dependent Claim
27 words
The multi-carrier transmission method according to claim 1 , wherein data requiring high quality among transmission data is assigned to the second sub-carriers as the low-rate data.
Claim 5
Dependent Claim
40 words
The multi-carrier transmission method according to claim 1 , wherein the low-rate data is subjected to mapping in association with a phase variation at a guard interval, so that a phase of multi-carrier signal is continuous at the guard interval.
Claim 6
Dependent Claim
102 words
A data transmitting apparatus comprising: a mapping system that carries out high-rate mapping and low-rate mapping with different rates; an assignor that assigns first data subjected to the high-rate mapping to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band, and further assigns second data subjected to the low-rate mapping to second sub-carriers, the second sub-carriers being orthogonal to the first sub-carriers and set on guard frequency bands on both sides of the specific frequency band; and a transmitter that transmits the multi-carrier signal including the first data and the second data assigned by the assignor.
Claim 7
Dependent Claim
102 words
A data transmitting apparatus comprising: a mapping system that carries out high-rate mapping and low-rate mapping with different rates; an assignor that assigns first data subjected to the high-rate mapping to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band, and further assigns second data subjected to the low-rate mapping to second sub-carriers, the second sub-carriers being orthogonal to the first sub-carriers and set on guard frequency bands on both sides of the specific frequency band; and a transmitter that transmits the multi-carrier signal including the first data and the second data assigned by the assignor.
Claim 8
Dependent Claim
14 words
A mobile station apparatus comprising the data transmitting apparatus according to claim 5 .
Claim 9
Dependent Claim
14 words
A base station apparatus comprising the data transmitting apparatus according to claim 5 .
Claim 10
Dependent Claim
144 words
An OFDM transmitting apparatus comprising: a mapping system that performs mapping on transmission data; an IFFT system that performs inverse Fast Fourier transform on the transmission data input in parallel from the mapping system; and a transmitter that transmits an OFDM signal output from the IFFT system, wherein the mapping system carries out high-rate mapping and low-rate mapping with different rates, the IFFT system assigns first data subjected to the high-rate mapping to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band, while assigning second data subjected to the low-rate mapping to second sub-carriers, the second subcarriers being orthogonal to the first sub-carriers and set on guard frequency bands on both sides of the specific frequency band, to perform inverse Fast Fourier transform, and the transmitter transmits the OFDM signal including the first data and the second data.
Claim 11
Dependent Claim
144 words
An OFDM transmitting apparatus comprising: a mapping system that performs mapping on transmission data; an IFFT system that performs inverse Fast Fourier transform on the transmission data input in parallel from the mapping system; and a transmitter that transmits an OFDM signal output from the IFFT system, wherein the mapping system carries out high-rate mapping and low-rate mapping with different rates, the IFFT system assigns first data subjected to the high-rate mapping to a plurality of first sub-carriers, orthogonal to one another, set on a specific frequency band, while assigning second data subjected to the low-rate mapping to second sub-carriers, the second subcarriers being orthogonal to the first sub-carriers and set on guard frequency bands on both sides of the specific frequency band, to perform inverse Fast Fourier transform, and the transmitter transmits the OFDM signal including the first data and the second data.
Claim 12
Dependent Claim
14 words
A mobile station apparatus comprising the OFDM transmitting apparatus according to claim 8 .
Claim 13
Dependent Claim
14 words
A base station apparatus comprising the OFDM transmitting apparatus according to claim 8 .
References Cited (Backward Citations)
US4841521A
Cited
WO1990004893A1
Cited
JPH04501348A
Cited
US5327580A
Cited
US5371548A
Cited
US5602835A
Cited
EP0673131A2
Cited
JPH07283806A
Cited
US6064662A
Cited
JPH0888617A
Cited
US5654955A
Cited
US5862189A
Cited
US5559788A
Cited
WO1996034480A1
Cited
JPH08316932A
Cited
US5751716A
Cited
US6061392A
Cited
US6128111A
Cited
US5953311A
Cited
US6175550B1
Cited
US6005894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-01-20 | 2006-07-22 | 2007-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-20 | 2010-07-22 | 2011-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-20 | 2014-07-22 | 2015-01-21 | $7700.00 | Window Closed / Lapsed |