Title :
Combined adaptive interference cancellation with antenna array for CDMA systems
Author :
Dai, Yuying ; Xue, Guoqiang ; LE-NGOC, THO ; Weng, Jianfeng
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
We combined the multistage adaptive parallel interference canceller with an antenna array. Two combination schemes are proposed. In the first approach, interference cancellation is performed at each element of the antenna followed by beamforming. The second method reduces the complexity by carrying out beamforming first. The output of the beamformer is used by the interference canceller. The proposed method provides a better performance than the array decorrelating detector at a considerably low complexity
Keywords :
AWGN channels; adaptive signal detection; adaptive signal processing; array signal processing; code division multiple access; computational complexity; interference suppression; multiuser channels; radiofrequency interference; spread spectrum communication; AWGN environment; BPSK; antenna array; antenna array processing; array decorrelating detector; beamforming; combined adaptive interference cancellation; complexity reduction; multiaccess interference; multistage adaptive parallel interference canceller; multiuser detection; near-far problem; synchronous DS-CDMA system; Adaptive arrays; Antenna arrays; Decorrelation; Detectors; Interference cancellation; Least squares approximation; Multiaccess communication; Multiuser detection; Receiving antennas; Sensor arrays;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891724
