Patent ID: 7903720
Filing Date: 2011-03-08
Classification: H04J

Abstract:
1. A method for generating an alternative direct sequence spread spectrum symbol to chip mapping embedded in a transceiver chip for wireless subsystems comprising the steps of: a) identifying a set of nearly orthogonal pseudo random noise sequences that are used by a standard transmission protocol; b) generating a plurality of candidate sets of pseudo random noise sequences that are nearly orthogonal to said set of nearly orthogonal pseudo random noise sequences that are used by said standard transmission protocol; and c) selecting at least one of said plurality of candidate sets of pseudo random noise sequences to serve as an alternative direct sequence spread spectrum symbol to chip mapping, wherein the at least one of said plurality of candidate sets of pseudo random noise sequences selected are embedded in the transceiver chip, wherein the step of identifying a set of nearly orthogonal pseudo random noise sequences comprises identifying a set of N/2 chip sequences Z wherein the step of generating a plurality of candidate sets of pseudo random noise sequences comprises generating a plurality of candidate sets X