Title :
Near-far resistance of CDMA communication systems with spatial diversity
Author :
Yue, Xiaodong ; Fan, Howard
Author_Institution :
Dept. of Comput. Sci., Winston-Salem State Univ., MA, USA
Abstract :
The advantages of spatial diversity are investigated with respect to two metrics. i.e., near-far resistance and the rank of the channel matrix. The impact of spatial diversity on the rank of the channel matrix and its significance is first studied. Then the near-far resistance of the minimum mean square error (MMSE) detector is derived for wireless code division multiple access (CDMA) communication systems with spatial diversity. The derived near-far resistance under different transmit-receive antenna configurations is analyzed and compared. It is shown that near-far resistance is enhanced when spatial diversity is introduced.
Keywords :
code division multiple access; diversity reception; least mean squares methods; matrix algebra; telecommunication channels; MMSE detector; channel matrix rank; code division multiple access; minimum mean square error detector; near-far resistance; spatial diversity; transmit-receive antenna configurations; wireless CDMA communication systems; Antenna arrays; Computer science; Detectors; History; Mean square error methods; Multiaccess communication; Radio link; Receiving antennas; Transmitting antennas; Wireless communication;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1326989
