TY - GEN
T1 - Space-time processing for increased capacity of wireless CDMA
AU - Wu, X.
AU - Haimovich, A. M.
N1 - Publisher Copyright:
© 1996 IEEE.
PY - 1996
Y1 - 1996
N2 - Spatial and temporal processing are combined to increase the capacity of CDMA-based wireless communications systems. Degrees of freedom provided by space-time processing are exploited to combat both fading and co-channel interference (the near-far effect). The following methods are formulated and studied: (1) space-time diversity, (2) cascade optimum spatial - diversity (RAKE) temporal, (3) cascade optimum spatial - optimum temporal, and (4) joint domain optimum processing. It is shown that, due to its interference cancellation capability, optimum combining provides significantly better performance than diversity processing. In particular, in a typical CDMA scenario with two antennas, the joint domain optimum combining system provides at least a 30% increase in capacity over diversity processing. Optimum combining may also be applied to compensate for imperfect power control of the signals received at the base station.
AB - Spatial and temporal processing are combined to increase the capacity of CDMA-based wireless communications systems. Degrees of freedom provided by space-time processing are exploited to combat both fading and co-channel interference (the near-far effect). The following methods are formulated and studied: (1) space-time diversity, (2) cascade optimum spatial - diversity (RAKE) temporal, (3) cascade optimum spatial - optimum temporal, and (4) joint domain optimum processing. It is shown that, due to its interference cancellation capability, optimum combining provides significantly better performance than diversity processing. In particular, in a typical CDMA scenario with two antennas, the joint domain optimum combining system provides at least a 30% increase in capacity over diversity processing. Optimum combining may also be applied to compensate for imperfect power control of the signals received at the base station.
UR - http://www.scopus.com/inward/record.url?scp=85068103972&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068103972&partnerID=8YFLogxK
U2 - 10.1109/ELECTR.1996.501221
DO - 10.1109/ELECTR.1996.501221
M3 - Conference contribution
AN - SCOPUS:85068103972
T3 - Professional Program Proceedings, ELECTRO 1996
SP - 131
EP - 135
BT - Professional Program Proceedings, ELECTRO 1996
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1996 Professional Program, ELECTRO 1996
Y2 - 30 April 1996 through 2 May 1996
ER -