Patent FR768436A successfully refreshed from Google Patents.
US5914933A
Expired / Lapsed
US
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Clustered OFDM communication system
Assignee: Nokia of America Corp
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Filing: 1996-10-15
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Granted: 1999-06-22
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Expires: 2016-10-15
Abstract
Abstract A multicarrier communication system for wireless transmission of blocks of data having a plurality of digital data symbols in each block. The communication system includes a device for distributing the digital data symbols in each block over a plurality of clusters, each of the clusters receiving one or more digital data symbols. The digital data symbols are encoded in each of the cluster; and modulated in each cluster to produce a signal capable of being transmitted over the sub-channels associated with each cluster. A transmitter thereafter transmits the modulated signal over the sub-channels. By distributing the modulated signal over a plurality of clusters, overall peak-to-average power (PAP) ratio is reduced during transmission and transmitter diversity is improved.
Inventors
- 👤 Leonard Joseph Cimini
- 👤 Babak Daneshrad
- 👤 Nelson Ray Sollenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:08
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/26; H04L27/2601; H04L27/2614; H04L27/2615; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/06; H04B7/0613; H04L27/2626; H04L27/2627; H04L27/2634; H04L27/2647; H04L27/2649; H04L27/26524; H04B7/08; H04B7/0837
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
128 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters, said encoding means including means for applying non-linear coding to reduce peak-to-average power ratio in each sub-channel; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and a transmitter for transmitting said modulated signal over said sub-channels.
Claim 2
Dependent Claim
128 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters, said encoding means including means for applying non-linear coding to reduce peak-to-average power ratio in each sub-channel; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and a transmitter for transmitting said modulated signal over said sub-channels.
Claim 3
Dependent Claim
27 words
The multicarrier communication system as claimed in claim 1, wherein said means for modulating said one or more digital data symbols includes means for providing OFDM modulation.
Claim 4
Dependent Claim
46 words
The multicarrier communication system as claimed in claim 1, wherein said digital data symbols are input to said distributing means at a first data rate, said distributing means distributing said plurality of digital data symbols at a second data rate less than said first data rate.
Claim 5
Dependent Claim
29 words
The multicarrier communication system as claimed in claim 1, wherein said means for distributing said plurality of digital data symbols over said second plurality of clusters includes a demultiplexer.
Claim 6
Dependent Claim
29 words
The multicarrier communication system as claimed in claim 1, further including a receiver for receiving said modulated signal transmitted by said plurality of clusters and demodulating said modulated signal.
Claim 7
Dependent Claim
45 words
The multicarrier communication system as claimed in claim 5, further including means located at said receiver for measuring frequency response of each sub-channel of said plurality of clusters, and means for providing feedback representing a frequency response characteristic of each transmission sub-channel to said transmitter.
Claim 8
Dependent Claim
39 words
The multicarrier communication system as claimed in claim 6, further including means for switching each said one or more digital data symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said transmission sub-channel.
Claim 9
Dependent Claim
38 words
The multicarrier communication system as claimed in claim 7, wherein said means for switching each said one or more digital data symbols includes said means for distributing said plurality of digital data symbols over said plurality of clusters.
Claim 10
Dependent Claim
17 words
The multicarrier communication system as claimed in claim 5, wherein said receiver includes a single demodulating receiver.
Claim 11
Dependent Claim
18 words
The multicarrier communication system as claimed in claim 5, wherein said receiver includes a plurality of demodulating receivers.
Claim 12
Dependent Claim
38 words
The multicarrier communication system as claimed in claim 1, further including means for synchronizing data for simultaneous transmission over all said sub-channels of said plurality of clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 13
Dependent Claim
24 words
The multicarrier communication system as claimed in claim 11, wherein said data transmission is packetized, said one or more symbols including block synchronization tones.
Claim 14
Dependent Claim
20 words
The multicarrier communication system as claimed in claim 1 further including multiple antennas, each antenna corresponding to a data cluster.
Claim 15
Dependent Claim
177 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and a transmitter for transmitting said modulated signal over said sub-channels; means for measuring frequency response characteristics of each sub-channel of said plurality of clusters, said means for measuring frequency response characteristic including means for providing feedback representing said frequency response characteristic of each transmission sub-channel to said transmitter; and, means for switching each said one or more symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said optimum transmission sub-channel.
Claim 16
Dependent Claim
177 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and a transmitter for transmitting said modulated signal over said sub-channels; means for measuring frequency response characteristics of each sub-channel of said plurality of clusters, said means for measuring frequency response characteristic including means for providing feedback representing said frequency response characteristic of each transmission sub-channel to said transmitter; and, means for switching each said one or more symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said optimum transmission sub-channel.
Claim 17
Dependent Claim
27 words
The multicarrier communication system as claimed in claim 14, wherein said means for modulating said one or more digital data symbols includes means for providing OFDM modulation.
Claim 18
Dependent Claim
43 words
The multicarrier communication system as claimed in claim 14, wherein said means for encoding said one or more digital data symbols in each of said plurality of clusters includes means for applying non-linear coding to reduce a peak-to-average power ratio in each sub-channel.
Claim 19
Dependent Claim
28 words
The multicarrier communication system as claimed in claim 14, wherein said means for distributing said plurality of digital data symbols over said plurality of clusters includes a demultiplexer.
Claim 20
Dependent Claim
44 words
The multicarrier communication system as claimed in claim 14, wherein said means for switching each said one or more signals to be transmitted to an optimum transmission sub-channel includes said means for distributing said plurality of digital data symbols over said plurality of clusters.
Claim 21
Dependent Claim
39 words
The multicarrier communication system as claimed in claim 14, further including means for synchronizing data for simultaneous transmission over all said transmission sub-channels of said plurality of clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 22
Dependent Claim
24 words
The multicarrier communication system as claimed in claim 19, wherein said data transmission is packetized, said data including one or more block synchronization tones.
Claim 23
Dependent Claim
31 words
The multicarrier communication system as claimed in claim 14, wherein said system includes a receiver for receiving said modulated signal transmitted by said plurality of clusters and demodulating said modulated signal.
Claim 24
Dependent Claim
29 words
The multicarrier communication system as claimed in claim 21, wherein said receiver includes said means for measuring frequency response characteristics of each transmission sub-channel of said plurality of clusters.
Claim 25
Dependent Claim
139 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and, a transmitter for transmitting said modulated signal over said sub-channels; and, means for synchronizing data for simultaneous transmission over all said sub-channels of said plurality of clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 26
Dependent Claim
139 words
A multicarrier communication system for wireless transmission of blocks of data, each said block having a plurality of digital data symbols, said system comprising: means for distributing said plurality of digital data symbols in each block over a plurality of clusters, each of said plurality of clusters capable of receiving one or more digital data symbols; means for encoding said one or more digital data symbols in each of said plurality of clusters; means for modulating said encoded one or more digital data symbols to produce a modulated signal capable of being transmitted over sub-channels associated with each respective cluster; and, a transmitter for transmitting said modulated signal over said sub-channels; and, means for synchronizing data for simultaneous transmission over all said sub-channels of said plurality of clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 27
Dependent Claim
27 words
The multicarrier communication system as claimed in claim 23, wherein said means for modulating said one or more digital data symbols includes means for providing OFDM modulation.
Claim 28
Dependent Claim
24 words
The multicarrier communication system as claimed in claim 23, wherein said data transmission is packetized, said data including one or more block synchronization tones.
Claim 29
Dependent Claim
43 words
The multicarrier communication system as claimed in claim 23, wherein said means for encoding said one or more digital data symbols in each of said plurality of clusters includes means for applying non-linear coding to reduce a peak-to-average power ratio in each sub-channel.
Claim 30
Dependent Claim
28 words
The multicarrier communication system as claimed in claim 23, wherein said means for distributing said plurality of digital data symbols over said plurality of clusters includes a demultiplexer.
Claim 31
Dependent Claim
67 words
The multicarrier communication system as claimed in claim 23, further including a receiver for receiving said modulated signal transmitted by said plurality of clusters and demodulating said modulated signal, said system further including means located at said receiver for measuring frequency response of each sub-channel of said plurality of clusters, and means for providing feedback representing a frequency response characteristic of each transmission sub-channel to said transmitter.
Claim 32
Dependent Claim
37 words
The multicarrier communication system as claimed in claim 28, further including means for switching each said one or more symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said transmission sub-channel.
Claim 33
Dependent Claim
35 words
The multicarrier communication system as claimed in claim 29, wherein said means for switching each said one or more symbols includes said means for distributing said plurality digital data symbols over said plurality of clusters.
Claim 34
Independent Claim
184 words
A method for wireless transmission of data represented as one or more blocks containing a plurality of digital data symbols in each block, which are distributed over a plurality of clusters, said method comprising the steps of: a) measuring a frequency response characteristic of each transmission sub-channel of said plurality of clusters: and providing feedback representing said frequency response characteristic of each transmission sub-channel to a transmitter; b) distributing said plurality of digital data symbols over a plurality of clusters, each cluster capable of transmitting one or more digital data symbols, and switching each said one or more digital data symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said optimum transmission sub-channel; c) encoding said one or more digital data symbols in each of said plurality of clusters.; d) modulating said encoded one or more digital data symbols distributed to each cluster to produce a modulated signal for transmission over sub-channels associated with each said plurality of clusters; and, e) transmitting said modulated signal over each sub-channel of said plurality of clusters for receipt by a receiver.
Claim 35
Independent Claim
184 words
A method for wireless transmission of data represented as one or more blocks containing a plurality of digital data symbols in each block, which are distributed over a plurality of clusters, said method comprising the steps of: a) measuring a frequency response characteristic of each transmission sub-channel of said plurality of clusters: and providing feedback representing said frequency response characteristic of each transmission sub-channel to a transmitter; b) distributing said plurality of digital data symbols over a plurality of clusters, each cluster capable of transmitting one or more digital data symbols, and switching each said one or more digital data symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said optimum transmission sub-channel; c) encoding said one or more digital data symbols in each of said plurality of clusters.; d) modulating said encoded one or more digital data symbols distributed to each cluster to produce a modulated signal for transmission over sub-channels associated with each said plurality of clusters; and, e) transmitting said modulated signal over each sub-channel of said plurality of clusters for receipt by a receiver.
Claim 36
Dependent Claim
40 words
The method for wireless transmission of data as claimed in claim 31, wherein said step of encoding said one or more digital data symbols includes the step of applying non-linear coding to reduce a peak-to-average power ratio in each channel.
Claim 37
Dependent Claim
40 words
The method for wireless transmission of data as claimed in claim 31, wherein said step of distributing said plurality of digital data symbols over said plurality of clusters further includes the step of demultiplexing said plurality of digital data symbols.
Claim 38
Dependent Claim
44 words
The multicarrier communication system for wireless transmission of data as claimed in claim 31, further including the step of synchronizing data for simultaneous transmission over all said sub-channels of said plurality of clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 39
Dependent Claim
146 words
A multicarrier communication system for wireless transmission of blocks of data between a transmitter and a receiver, each said block having a quantity NM of digital data symbols, said system comprising: means for distributing said NM digital data symbols in each block over M clusters, each said M clusters capable of receiving N digital data symbols; means for encoding said N digital data symbols in each of said M clusters, said means for encoding said N digital data symbols in each of said M clusters including means for applying non-linear coding to reduce a peak-to-average power ratio in each sub-channel; means located in each said cluster for providing OFDM modulation of said encoded N digital data symbols and to produce an OFDM signal capable of being transmitted over transmission sub-channels associate d with each respective cluster; and means for transmitting said OFDM signal over said sub-channels.
Claim 40
Dependent Claim
146 words
A multicarrier communication system for wireless transmission of blocks of data between a transmitter and a receiver, each said block having a quantity NM of digital data symbols, said system comprising: means for distributing said NM digital data symbols in each block over M clusters, each said M clusters capable of receiving N digital data symbols; means for encoding said N digital data symbols in each of said M clusters, said means for encoding said N digital data symbols in each of said M clusters including means for applying non-linear coding to reduce a peak-to-average power ratio in each sub-channel; means located in each said cluster for providing OFDM modulation of said encoded N digital data symbols and to produce an OFDM signal capable of being transmitted over transmission sub-channels associate d with each respective cluster; and means for transmitting said OFDM signal over said sub-channels.
Claim 41
Dependent Claim
26 words
The multicarrier communication system as claimed in claim 35, wherein said receiver receives said modulated signal transmitted by said M clusters and demodulates said modulated signal.
Claim 42
Dependent Claim
45 words
The multicarrier communication system as claimed in claim 35, further including means located at said receiver for measuring frequency response of each sub-channel of said M clusters, and means for providing feedback representing a frequency response characteristic of each transmission sub-channel to said transmitting means.
Claim 43
Dependent Claim
37 words
The multicarrier communication system as claimed in claim 37, further including means for switching each said N digital data symbols to be transmitted to an optimum transmission sub-channel according to said frequency response of said transmission sub-channel.
Claim 44
Dependent Claim
34 words
The multicarrier communication system as claimed in claim 38, wherein said means for switching each said N digital data symbols includes said means for distributing said NM digital data symbols over said M clusters.
Claim 45
Dependent Claim
37 words
The multicarrier communication system as claimed in claim 35, further including means for synchronizing data for simultaneous transmission over all said sub-channels of said M clusters to effect simultaneous transmission of data over an entire transmission bandwidth.
Claim 46
Dependent Claim
24 words
The multicarrier communication system as claimed in claim 40, wherein said data transmission is packetized, said one or more symbols including block synchronization tones.
Claim 47
Dependent Claim
13 words
The multicarrier communication system as claimed in claim 35 further including M antennas.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-21 | 2002-12-21 | 2003-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-21 | 2006-12-21 | 2007-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-21 | 2010-12-21 | 2011-06-22 | $7700.00 | Window Closed / Lapsed |