Patent ID: 8391249
Filing Date: 2013-03-05
Classification: H04J

Abstract:
1. An apparatus, comprising: a first Hadamard encoder for receiving a plurality of symbol streams for respective ones of a plurality of remote stations and encoding each of the symbol streams with one of a plurality of covering sequences with pattern repetition to form a plurality of covered streams, wherein each of the plurality of covering sequences is based on a remote station identifier for the respective one of the plurality of remote stations, wherein the first Hadamard encoder segments encoding time into two or more segments and covers each of the plurality of symbol streams with two or more sequences with pattern repetition, each sequence for covering during the two or more segments, respectively, and the sequence covering each symbol stream during a segment being unique to the respective symbol stream, and wherein a first Hadamard sequence is selected corresponding to a first remote station identifier and a second Hadamard sequence is selected based on a second remote station identifier; a summer for summing the plurality of covered streams to form a first Code Division Multiplexed (CDM) signal; and a second encoder for covering the first CDM signal with a Walsh covering sequence to form first covered CDM signal.