Title :
Sum capacity of CDMA systems with multiple transmit antennas
Author :
Mantravadi, Ashok ; Veeravalli, Venugopal V.
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
The use of multiple antennas at the transmitter (and receiver) is considered for a synchronous CDMA system. The spreading sequences are assumed to be random and independent across users, but could be dependent across the transmit antennas of each user. The effect of various system parameters, especially sequence correlation across transmit antennas, on the spectral efficiency of the optimum receiver is studied.
Keywords :
antenna arrays; channel capacity; code division multiple access; multiuser channels; receiving antennas; spread spectrum communication; transmitting antennas; independent sequences; multiple receiver antennas; multiple transmit antennas; optimum receiver; random sequences; sequence correlation; spectral efficiency; spreading sequences; sum capacity; synchronous CDMA system; system parameters; Engineering profession; Fading; Gaussian distribution; Log periodic antennas; Multiaccess communication; Random sequences; Receiving antennas; Symmetric matrices; Transmitters; Transmitting antennas;
Conference_Titel :
Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on
Print_ISBN :
0-7803-7501-7
DOI :
10.1109/ISIT.2002.1023552
