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Wireless receiver

  • US 10,142,145 B2
  • Filed: 11/28/2016
  • Issued: 11/27/2018
  • Est. Priority Date: 11/27/2015
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving, at a first antenna, an observation of a symbol transmitted across a wireless communications channel perceived by the first antenna;

    generating a modified observation of the symbol based on a product of the received observation and the complex conjugate of a channel estimate of the channel; and

    generating, based on the modified observation and the channel estimate, log-likelihood ratios (LLRs) for the symbol for a maximum-likelihood-based decoder to decode,wherein generating log-likelihood ratios includes;

    generating a LLR associated with a most significant bit of the symbol, andgenerating a LLR associated with a next most significant bit of the symbol;

    wherein the log-likelihood ratio (LLR) associated with the most significant bit is generated based on the ratio of the real part (yI) or imaginary part (yQ) of the modified observation to Gaussian-distributed noise power of the channel.

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