发明授权
- 专利标题: Channel and interference estimation in single-carrier and multi-carrier frequency division multiple access systems
- 专利标题(中): 单载波和多载波频分多址系统中的信道和干扰估计
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申请号: US11332604申请日: 2006-01-12
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公开(公告)号: US08331216B2公开(公告)日: 2012-12-11
- 发明人: Ravi Palanki , Aamod Khandekar
- 申请人: Ravi Palanki , Aamod Khandekar
- 申请人地址: US CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: US CA San Diego
- 代理商 Stanton Braden
- 主分类号: H04J11/00
- IPC分类号: H04J11/00 ; H04W36/00 ; H04B7/00 ; H04K1/10
摘要:
In a single-carrier frequency division multiple access (SC-FDMA) system, a receiver receives transmission symbols from a transmitter, determines a set of subbands used by the transmitter, processes the received transmission symbols for the set of subbands, obtains received pilot values for a transmitted pilot, and obtains received data values for transmitted data. The receiver may iteratively perform channel and interference estimation for the transmitter. The receiver selects an initial interference estimate, derives a channel estimate based on the received pilot values and the interference estimate, and derives a new interference estimate based on the received pilot values and the channel estimate. The receiver may repeat the derivation of the channel estimate and the interference estimate for multiple iterations. The receiver then performs data detection and/or receiver spatial processing on the received data values based on the channel estimate and the interference estimate.