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Communication system with repeat-response combining mechanism and method of operation thereof

  • US 9,954,643 B2
  • Filed: 06/03/2013
  • Issued: 04/24/2018
  • Est. Priority Date: 06/22/2012
  • Status: Active Grant
First Claim
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1. A requesting device of a communication system comprising:

  • an antenna configured to;

    receive preceding data including a communication content corresponding to an instance of a transmission block;

    transmit a repeat request corresponding to an error detection status for the preceding data;

    receive a receiver signal corresponding to a further instance of the transmission block subsequent to the repeat request;

    a control unit, coupled to the antenna, configured to;

    determine a previous communication value resulting from decoding the preceding data for generating the error detection status of the preceding data;

    identify a repeat data corresponding to the repeat request from the receiver signal;

    generate an accumulation output including systematic channel log-likelihood ratios (LLRs), subsequent to de-interleaving the receiver signal and de-puncturing the repeat data, based on combining the preceding data and the repeat data, and a repeat detection result and a preceding detection result; and

    determine the communication content based on decoding the accumulation output using the previous communication value and the accumulation output.

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