Patent ID: 7542409
Filing Date: 2009-06-02
Classification: H04L

Abstract:
1. A method for processing signals received in a communications system, comprising: determining symbol information corresponding to a re-transmitted packet that contains a plurality of signals, said determining including determining a hard-decision symbol value for each of the signals in said re-transmitted packet, said hard-decision symbol value indicative of a location of a corresponding one of the signals in a phasor diagram that includes a plurality of basic symbol regions and a plurality of threshold symbol regions; comparing the symbol information of said re-transmitted packet with symbol information of an original packet, said comparing including comparing said hard-decision symbol value for each signal in said re-transmitted packet with a hard-decision symbol value for a corresponding signal in said original packet, said comparing further including performing a logical operation between said hard-decison symbol value for each signal in said re-transmitted packet and said hard-decision symbol value for the corresponding signal in said original packet; forming a combined packet based on a result of the comparison; performing error detection on said combined packet; and transmitting a re-transmission request based on a result of said error detection.