ReceiverDesign forOFDM-CDMA Systemswith Multiplexed STBC
Jianfeng Wang · 2005
OFDM combined withCDMA hasemerged asan attractive technique duetoitslowequalization complexity and goodperformance inmultipath fading channels duetofrequency Rakereceiver. Using thetransmitter diversity scheme andlayered space-time (LST) architecture withOFDM-CDMA,highspectral efficiency andgooderrorrateperformance canbeachieved atthesametime. Inthis paper, thetransceiver structure in OFDM-CDMAwithmultiplexed space-time block codes(STBC) isproposed, inwhichthenumberofreceive antennas can belessthanthatoftransmit antennas. Computer simulation demonstrates effectiveness ofthisdetector andconclusion is followed.