Title :
Efficient implementation of DOA estimation for DS-CDMA systems with smart antennas
Author :
Yang, Li ; Ming, HU ; Liwan, Liyang ; Weifeng, Pan ; Yaqin, Chen ; Zhenghe, Feng
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
An efficient implementation of DOA estimation is proposed for DS-CDMA systems with smart antennas. We suggest that the received signal is first decoded to enhance its SNR and reduce its complexity, then a rough estimation is done to simplify the ANN structure before data is processed by a backpropagation artificial neural network (BP ANN). Simulation results show this method is more precise and stable and can endure lower SNR than many other algorithms
Keywords :
adaptive antenna arrays; backpropagation; code division multiple access; decoding; direction-of-arrival estimation; neural nets; parameter estimation; spread spectrum communication; BP ANN; DOA estimation; DS-CDMA systems; SNR; artificial neural network; backpropagation; decoding; rough estimation; smart antennas; Artificial neural networks; Decoding; Direction of arrival estimation; Directive antennas; Frequency estimation; Interference; Microwave antennas; Multiaccess communication; Sensor systems; Signal processing;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.889189
