Claims
- 1. A communication system comprising: a framer for segmenting transmit data blocks into fixed frame lengths for generating information symbols from a discrete alphabet of symbols;
a plurality of antenna links; a channel encoder for encoding the generated information symbols with an error control code for producing code word symbols; a spatial formatter for parsing the produced code word symbols to allocate the symbols to a presentation order among said plurality of antenna links; and a phase shift keying modulator for mapping the parsed code word symbols onto constellation points from a discrete complex-valued signaling constellation according to binary projections to achieve spatial diversity.
- 2. A communication system as recited in claim 1 comprising data terminal equipment (DTE) coupled to said framer for communicating digital cellular data blocks.
- 3. A communication system as recited in claim 2 wherein said digital cellular data terminal equipment comprises Code Division Multiple Access (CDMA) systems.
- 4. A communication system as recited in claim 2 wherein said digital cellular data terminal equipment comprises Time Division Multiple Access (TDMA) systems.
- 5. A communication system as recited in claim 1 wherein said channel encoder comprises a mobile channel encoder producing the code word symbols having length of a multiple N of the number of said plurality of antenna links L.
- 6. A communication system as recited in claim 5 wherein said spatial formatter parses the length N of the produced code word symbols among L antennas.
- 7. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein the combination of channel encoder and spatial formatter are chosen from the class of space-time codes satisfying a binary rank criteria.
- 8. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein the combination of channel encoder and spatial formatter are provided with a stacking space-time code construction.
- 9. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein binary phase shift keying (BPSK) modulation is used and the space-time code is based on formatting the output of convolutional channel encoder for presentation across the transmit antennas.
- 10. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein a concatenated space-time code is used in which the outer code is used to satisfy a binary rank criteria and multiple inner codes are used to encode the transmitted information from the multiple transmit antennas.
- 11. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein a concatenated space-time code is used in which the inner code is composed of a channel encoder and a spatial formatter designed to satisfy a binary rank criteria.
- 12. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein the combination of channel encoder and spatial formatter are covered by a multi-stacking construction.
- 13. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein quadrature phase shift keying (QPSK) modulation is used and the space-time code is covered by a stacking, multi-stacking, or de-stacking constructions for QPSK.
- 14. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein QPSK modulation is used and the space-time code is based on formatting the output of a linear convolutional code over the ring of integers modulo 4 for presentation across the multiple transmit antennas.
- 15. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein QPSK modulation is used and the space-time code employs a dyadic construction.
- 16. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein multi-level coded modulation and multi-stage decoding are used and the binary space-time code employed in each level belongs to the class of codes that satisfy the binary rank criterion or any of the constructions.
- 17. A communication system as recited in claim 2 comprising two transmit antennas wherein M-ary P5K modulation, M=8 or more, is used and the space-time code belongs to a class satisfying the binary rank criteria or any of the constructions.
- 18. A communication system as recited in claim 2 comprising a plurality of transmit antennas, wherein graphical space-time codes are designed such that the code generating matrix satisfies the stacking, multi-stacking, or de-stacking construction.
- 19. A communications method comprising:
generating information symbols for data block frames of fixed length; encoding the generated information symbols with an underlying error control code to produce the code word symbols; parsing the produced code word symbols to allocate the symbols in a presentation order to a plurality of antenna links; mapping the parsed code word symbols onto constellation points from a discrete complex-valued signaling constellation; transmitting the modulated symbols across a communication channel with the plurality of antenna links; providing a plurality of receive antennas at a receiver to collect incoming transmissions; and decoding received baseband signals with a space-time decoder.
- 20. A method as recited in claim 19 wherein said encoding and parsing steps are performed with a space-time encoder having a channel encoder and a space-time formatter.
- 21. A communications system comprising:
means for generating information symbols for data block frames of fixed length; means for encoding the generated information symbols with an 5 underlying error control code to produce the code word symbols; means for parsing the produced code word symbols to allocate the symbols in a presentation order to a plurality of antenna links; means for mapping the parsed code word symbols onto constellation points from a discrete complex-valued signaling constellation; means for transmitting the modulated symbols across a communication channel with the plurality of antenna links; means for providing a plurality of receive antennas at a receiver to collect incoming transmissions; and means for decoding received base band signals with a space-time decoder.
- 22. A communication system as recited in claim 21 wherein said encoding means comprises a mobile channel encoder producing the codeword symbols having length of a multiple N of the number of said plurality of antenna links L.
- 23. A communication system as recited in claim 22 wherein said parsing means comprises a spatial formatter for parsing the length N of the produced code word symbols among L antennas.
- 24. A communication system as recited in claim 21 wherein said encoding and parsing means comprise a space-time encoder having a channel encoder and a space-time formatter.
- 25. A communication system as recited in claim 24 comprising receiving means for collecting incoming transmissions demodulated with a phase shift keying demodulator and a space-time decoder to demodulate the code word symbols.
Parent Case Info
[0001] This application claims priority to U.S. Provisional patent application Serial No. 60/101,029, filed Sep. 18, 1998 for “Method and Constructions for Space-Time Codes for PSK Constellations”, and U.S. Provisional patent application Serial No. 60/144,559, filed Jul. 16, 1999 for “Method and Constructions for Space-Time, Codes for PSK Constellations II”, both of which were filed by A. Roger Hammons, Jr. and Hesham El Gamal.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60101029 |
Sep 1998 |
US |
|
60144559 |
Jul 1999 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09397896 |
Sep 1999 |
US |
Child |
10755981 |
Jan 2004 |
US |