Invention Publication
EP1949561A2 REDUCED COMPLEXITY DETECTION AND DECODING FOR A RECEIVER IN A COMMUNICATION SYSTEM
审中-公开
检测并降低复杂度解码FOR A放大器的通信系统
- Patent Title: REDUCED COMPLEXITY DETECTION AND DECODING FOR A RECEIVER IN A COMMUNICATION SYSTEM
- Patent Title (中): 检测并降低复杂度解码FOR A放大器的通信系统
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Application No.: EP06838163.1Application Date: 2006-11-20
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Publication No.: EP1949561A2Publication Date: 2008-07-30
- Inventor: BJERKE, Bjorn , MEDVEDEV, Irina , KETCHUM, John W. , WALLACE, Mark S. , WALTON, Jay Rodney
- Applicant: QUALCOMM Incorporated
- Applicant Address: 5775 Morehouse Drive San Diego, CA 92121 US
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: 5775 Morehouse Drive San Diego, CA 92121 US
- Agency: Carstens, Dirk Wilhelm
- Priority: US738159P 20051118; US345976 20060201
- International Announcement: WO2007062021 20070531
- Main IPC: H04B7/08
- IPC: H04B7/08 ; H04B7/04 ; H04L25/03 ; H04L1/06
Abstract:
Techniques for performing detection and decoding at a receiver are described. In one scheme, the receiver obtains R received symbol streams for M data streams transmitted by a transmitter, performs receiver spatial processing on the received symbols to obtain detected symbols, performs log-likelihood ratio (LLR) computation independently for each of D best data streams, and performs LLR computation jointly for the M D remaining data streams, where M > D ≥ 1 and M > 1. The D best data streams may be selected based on SNR and/or other criteria. In another scheme, the receiver performs LLR computation independently for each of the D best data streams, performs LLR computation jointly for the M D remaining data streams, and reduces the number of hypotheses to consider for the joint LLR computation by performing a search for candidate hypotheses using list sphere detection, Markov chain Monte Carlo, or some other search technique.
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