Patent ID: 7715462
Filing Date: 2010-05-11
Classification: H04L

Abstract:
1. A receiver for use in a variable spreading factor-orthogonal frequency and code division multiplexing (VSF-OFCDM) system, said receiver being arranged to process a received signal having an associated chip rate, said receiver comprising: a sequence extension remover for removing a predetermined number of chips from at least one predetermined position of said received signal to form a modified signal; a first converter for converting the modified signal from a serial sequence to a parallel sequence; a despreader coupled to said first converter for receiving said parallel sequence and for despreading said parallel sequence to derive a group of symbols; an orthogonal transform block, coupled to said despreader for transforming said symbols from a first domain to form a transformed signal in a second domain; an equalizer block coupled to said transform block for equalizing said transformed signal to reduce channel distortion and form an equalized signal; a deinterleaver block coupled to said equalizer block to receive said equalized signal and form a deinterleaved signal; and a second converter coupled to said deinterleaver block for converting said deinterleaved signal from a parallel sequence to a serial sequence.