发明授权
- 专利标题: Method and apparatus for interferer parameter estimation using multiple receiver arbitration
- 专利标题(中): 使用多接收机仲裁进行干扰参数估计的方法和装置
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申请号: US12612208申请日: 2009-11-04
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公开(公告)号: US08064531B2公开(公告)日: 2011-11-22
- 发明人: Karl Molnar
- 申请人: Karl Molnar
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 主分类号: H04K1/10
- IPC分类号: H04K1/10 ; H04L27/28
摘要:
In one embodiment, a receiver implements a method of demodulating a set of symbols dispersed within a time-frequency grid of a received OFDM signal. The method includes determining which one of two or more demodulators is preferred for use in a given region of the time-frequency grid by evaluating detection statistics generated by the demodulators for the set of symbols. Each demodulator operates according to different demodulation parameters that correspond to different interference assumptions. The method further includes recovering the set of symbols for decoding using whichever demodulator is preferred for each symbol according to the region from which the symbol is recovered. The method may be further extended by updating each demodulator's demodulation parameters using reference and/or data symbols from the region(s) where that demodulator is preferred, and recovering the desired symbols using the updated demodulation parameters. Such updating can be further iterated, for additional demodulation parameter refinement.
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