1. Efficient implementation of DOA estimation for DS-CDMA systems with smart antennas
- Author
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Li Yang, Chen Yaqin, Pan Weifeng, Liyang Liwan, Feng Zhenghe, and Hu Ming
- Subjects
Signal processing ,Artificial neural network ,Code division multiple access ,Computer science ,Estimation theory ,Speech recognition ,Computer Science::Neural and Evolutionary Computation ,Smart antenna ,Interference (wave propagation) ,Backpropagation ,Spread spectrum ,Computer engineering ,Decoding methods ,Computer Science::Information Theory - 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.
- Published
- 2002
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