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Method, apparatus and computer program product providing soft iterative recursive least squares (RLS) channel estimator

  • US 8,327,219 B2
  • Filed: 11/09/2011
  • Issued: 12/04/2012
  • Est. Priority Date: 05/16/2006
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting a received signal for one of a structured irregular low-density parity-check (LDPC) code multiple-input-multiple-output (MIMO) orthogonal frequency division multiplex (OFDM) system and an iterative LDPC-coded MIMO-OFDM system; and

    iteratively determining an extrinsic output for the received signal at a channel decoder based on a current a posteriori probability (APP), such that each iteration comprises;

    determining the current APP at a soft data detector based at least in part on a prior extrinsic output from the channel decoder and a soft channel estimate from an iterative Recursive Least Squares-based channel estimator, the prior extrinsic output and the soft channel estimate each determined based on a prior APP.

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