一种用于CDMA系统的新型智能天线
A NEW SMART ANTENNA FOR CDMA SYSTEM
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摘要: 本文提出了一种用于CDMA系统的新型智能天线。这种智能天线采用近似等旁瓣方向图,加权矢量无需预先测量、校正,可由累加、平均算法获得,具有良好的工程实现性。本文提出的智能天线与自适应智能天线具有相似的扩容能力,但它无需迭代、响应速度快、鲁棒性也更好。
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关键词:
- 智能天线; 圆形阵列; CDMA系统
Abstract: A new smart antenna for CDMA system was proposed in the paper. The beam pattern with approximately equal side lobe is adopted. The weighting vectors are got not by measuring or rectifying in advance, they can be got by average method, and can be realized easily in engineering. The enhanced capability of this antenna is approximately equal to adaptive antenna, but need not iterative procedure, has fast response and good robustness. -
George V T, Mark A B. Performance enhancement of DS-CDMA PCS cellular networks with smart antennas. IEEE Vehicular Technology Conference vol.1 Piscataway, NJ, USA: 1995, 40-44.[2]Wang Y, Cruz J R. Adaptive antenna arrays for the reverse link of CDMA cellular communication systems[J].Electron. Lett.1994, 30(13):1017-1018[3]Takeo Ohgane. Spectral efficiency improvement by base station antenna pattern control for land mobile cellular systems. IEICE Trans. Comm., 1994, E77-B(5): 598-605.[4]Zhenghe Feng, Zhijun Zhang. Dynamic spatial channel assignment for smart antenna[J].Wireless Personal Communication.1999, 11(1):79-87[5]Tsoulos G V, Beach M A. Sensitivity analysis of capacity enhancement with adaptive multibeam antennas for DCS1800, Electron[J].Letter.1996, 32(19):1745-1747[6]Liu Hui, Xu G H. Smart antennas in wireless system: uplink multiuser blind channel and sequence detection[J].IEEE Trans. on Communications.1997, 45(2):187-199[7]Schmidt R O. Multiple emitter location and signal parameter estimation. IEEE Trans. on AP,1986, AP-34(3): 276-280.[8]Roy R, Kailath T. SPRIT-Estimation of signal parameters via rotational invariance techniques.IEEE Trans. on ASSP, 1989, ASSP37(7): 984-995.[9]Bigler L, Lin H P. Experimental direction of arrival and spatial signature measurements at 900 MHz for smart antenna systems. IEEE Vehicular Technology Conference vol.1, Piscataway, NJ,USA: 1995, 55-58. -
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