Patent ID: 8775907
Filing Date: 2014-07-08
Classification: H03M

Abstract:
1. A method of receiving and decoding a redundant orthogonal frequency division multiplexing (OFDM) transmission having packet A containing OFDM symbols and repeat packet B containing OFDM symbols where both whole packet A and whole packet B have failed decoding by using an interference mitigation selection combiner method wherein for each OFDM symbol the bits produced from the OFDM symbols are identified and combined according to the following method comprising: first identifying packet A's individual OFDM symbols as packet A then computing a cumulative packet A OFDM symbol path metric from error correction code for each OFDM symbol that produces a bit in whole packet A and a cumulative packet B OFDM symbol path metric from error correction code for each OFDM symbol that produces a bit in whole packet B; then computing a cumulative whole packet A path metric from error correction code for all OFDM symbols that produce a bit in whole packet A and a cumulative whole packet B path metric from error correction code for all OFDM symbols that produce a bit in whole packet B; then computing a packet A threshold by adding said cumulative whole packet A path metric's mean to a predetermined constant times the standard deviation of said cumulative whole packet A path metric and computing a packet B threshold by adding said cumulative whole packet B path metric's mean to a predetermined constant times the standard deviation of said cumulative whole packet B path metric; then if packet A then if packet A then if packet B then if packet A then final error decoding said selected bits.