Title :
Multiple antennas in random code CDMA systems: transmission, detection and spectral efficiency
Author :
Huang, Howard ; Viswanathan, Harish ; Foschini, G.J.
Author_Institution :
Bell Labs., Lucent Technol., Holmdel, NJ, USA
Abstract :
We investigate the use of multiple antennas at the transmitter and multiple antennas and multi-user decorrelating detectors at the receivers for providing high-speed data on the downlink of cellular CDMA systems. We analyze the system´s spectral efficiency by combining link level bit error rate simulations with system level signal-to-interference ratio simulations. We show that using random spreading codes, a spectral efficiency of 3.8 bits/chip/sector can be achieved using 8 transmit and 12 receive antennas, compared to a spectral efficiency of 0.16 bits/chip/sector for a voice system with single transmit and receive antennas
Keywords :
cellular radio; channel capacity; code division multiple access; data communication; decorrelation; error statistics; multiuser channels; radio links; radiofrequency interference; random codes; receiving antennas; signal detection; spectral analysis; spread spectrum communication; transmitting antennas; voice communication; BER; cellular CDMA systems; downlink; high-speed data; link level bit error rate simulations; multiple antennas; multiuser decorrelating detectors; random code CDMA systems; random spreading codes; receive antennas; spectral efficiency; system capacity; system level signal-to-interference ratio simulations; transmission; transmit antennas; transmitter; voice system; Analytical models; Decorrelation; Detectors; Downlink; Multiaccess communication; Receiving antennas; Signal analysis; Spectral analysis; Transmitters; Transmitting antennas;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.797805
