Title :
Smart antenna technology for the reverse link of WCDMA systems
Author :
Zhang, Jing ; Gong, Yaohuan ; Li, Haitao ; Wang, Weixue
Author_Institution :
Dept. of Eletronic Tech, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
29 June-1 July 2002
Abstract :
An efficiently combined structure of a smart antenna array and a conventional RAKE combiner is presented and applied to the pilot symbol-assisted reverse link in a WCDMA system. According to the frame structure of WCDMA, we use a least-mean-square (LMS) adaptive array processing algorithm, which uses the spreading sequences of pilot symbols of each slot as the reference signals for updating the weight vectors of the antenna arrays. The simulation results show the method is simple and practical, and improves the capacity of the system greatly, thus solving the capacity problem of the reverse channel of WCDMA systems.
Keywords :
3G mobile communication; adaptive antenna arrays; adaptive signal processing; array signal processing; cellular radio; channel capacity; code division multiple access; least mean squares methods; radio receivers; 3rd generation mobile communications; LMS algorithm; RAKE combiner; W-CDMA; WCDMA; adaptive processing algorithm; array processing algorithm; cellular systems; channel capacity; frame structure; least-mean-square algorithm; pilot symbol; reverse link; smart antenna array; spreading sequences; weight vectors; Adaptive arrays; Antenna arrays; Array signal processing; Convergence; Fading; Least squares approximation; Multiaccess communication; Multipath channels; Multiple access interference; Receiving antennas;
Conference_Titel :
Communications, Circuits and Systems and West Sino Expositions, IEEE 2002 International Conference on
Print_ISBN :
0-7803-7547-5
DOI :
10.1109/ICCCAS.2002.1180606
