Qingxin Chen

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Multi-carrier DS-CDMA has been considered as an eeective scheme for reducing multiple access interference in the case of quasi-synchronous transmission. The scheme allows the reduction of multiple access interference by transferring the or-thogonality property of the signals into the frequency domain where the orthog-onality property is robust to relative(More)
A modified multicarrier (MC) direct-sequence code-division multiple-access (DS-CDMA) system has been proposed for use over slow multipath fading channels with frequency selectivity in the reverse link transmission of a cellular network. Instead of transmitting data substreams uniformly through sub-channels, data substreams hop over subchannels with the(More)
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