Title :
A differential detection scheme for DS/CDMA spatial diversity
Author :
Gao, Chunjun ; Haimovich, Alexander M.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
A differential detection scheme for a multiple-input multiple-output (MIMO) DS/CDMA link is presented, where neither the transmitters nor the receivers know the channel state information (CSI). The transmission provides for full spatial diversity gain by a simple detection scheme, which is the natural extension of differential detection combined with an orthogonal transmit diversity (OTD) approach. Moreover, a capacity analysis for this scheme is illustrated. The capacity analysis and simulation results show that 3 dB loss is paid for differential detection compared to coherent detection
Keywords :
MIMO systems; channel capacity; code division multiple access; differential detection; diversity reception; radio links; receiving antennas; spread spectrum communication; transmitting antennas; DS-CDMA spatial diversity; MIMO link; capacity analysis; channel state information; coherent detection; differential detection; multiple-input multiple-output link; orthogonal transmit diversity; receive antennas; spatial diversity gain; transmit antennas; wireless networks; Channel state information; Constellation diagram; Demodulation; Diversity methods; Diversity reception; Frequency shift keying; MIMO; Multiaccess communication; Receiving antennas; Transmitting antennas;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Conference_Location :
New York, NY
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.996897
