초록 ▼

A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N.gtoreq.1) encoded signal channels over multiple air signal paths. The N signal channels are encoded using a properly chosen subset of Walsh codes based on a Walsh-Matrix, W.sup.M, where M is a power of two. In the di

A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N.gtoreq.1) encoded signal channels over multiple air signal paths. The N signal channels are encoded using a properly chosen subset of Walsh codes based on a Walsh-Matrix, W.sup.M, where M is a power of two. In the disclosed MC-CDMA receiver, a timing correlator means recovers the timing and control signal for the N signal channels received over any particular signal path; a FWHT circuit together with a second correlator means decodes all of the N signal channels.

대표청구항 ▼

[ We claim:] [1.] A multicode (MC) code division multiple access (CDMA) receiver comprisingrake receiver means for receiving a MC-CDMA signal including N (where N>1) signal channels with linearly modulated data being spread using binary spreading code sequences of N.sub.c chips,wherein each of the b

[ We claim:] [1.] A multicode (MC) code division multiple access (CDMA) receiver comprisingrake receiver means for receiving a MC-CDMA signal including N (where N>1) signal channels with linearly modulated data being spread using binary spreading code sequences of N.sub.c chips,wherein each of the binary spreading code sequences of N.sub.c chips includes a plurality of N subcode sequences, where N.ltoreq.N.sub.c and wherein the nth subcode sequence, n=1, 2, . . . , N, of each of the N signal channels are encoded using subcode sequence H.sub.n or its binary inverse H.sub.n.sup.',a first complex correlator means for tracking and acquiring timing information for a preselected channel of the MC-CDMA signal, anda second correlator means, including a FWHT means, and utilizing the acquired timing information and the N subcode sequences for simultaneously decoding the N signal channels by correlating the corresponding intervals of the received signal by the subcodes H.sub.1, H.sub.2, H.sub.3, . . . , H.sub.N, and using these outputs as inputs to the FWHT.