空分多址技术在GSM系统中的应用分析

崔炎; 吕善伟

空分多址技术在GSM系统中的应用分析

崔炎,
吕善伟

北京航空航天大学电子工程系

基金项目: 国家自然科学基金资助项目(60271012)

详细信息

中图分类号: TN 929.533
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- 被引次数: 0
出版历程
- 收稿日期: 2001-12-17
- 网络出版日期: 2003-02-28

Application of SDMA in GSM

Dept. of Electronic Engineering, Beijing University of Aeronautics and Astronautics

摘要

摘要: 考虑到时分多址系统的特殊性质,并结合已有的时分多址系统中共信道干扰抑制技术,提出了一种应用于GSM(Global System for Mobile)系统的,不依赖于用户空间特征估计的空分多址方案.方案采用自适应天线和软波束形成技术,能够在时分多址基础上实现多路信号的空分接收.文章给出了在GSM系统中应用该技术的仿真实例,仿真结果表明,该方法能够有效的形成正交接收,发送波束,从而保证共用相同信道的多个用户间的互不干扰.
- 空分多址 /
- 共信道干扰 /
- 自适应阵 /
- 全球移动通信系统
Abstract: Considering the special characters of GSM (Globle System for Mobile) and the method presented by other researchers which uses antenna arrays to eliminate the cochannel interferences in wireless communication, a SDMA (Space Division Multiple Access) architecture used in GSM was put forward. Adaptive array and soft beamforming were used in this method to realize SDMA in TDMA (Time Division Multiple Access) system and no estimation of DOA (Direction of Arrival) or spatial signature was required in advance. This method can produce orthogonal beams in relative mild situation, therefore the same channel can be used by different users simultaneously. The applicability of this method was verified through simulation.
- space division multiple access /
- common-channel interferences /
- adaptive arrays /
- global system for mobile

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参考文献(1)

[1] Rappaport T S. Wireless communications:Principles and practice[M]. Prentice-Hall Inc, 1996. 500~515 [2] Leary J, Gooch R P. Adaptive beamforming for TDMA signals . Proc Twenty-Ninth Asilomar Conf Signals, Syst, Comput, Pacific Grove, CA, 1995.1378~1382 [3] Keerthi A V, Shynk J J. Seperation of cochannel signals in TDMA mobile radio[J]. IEEE Trans Signal Processing, 1998, 46(10):2684~2697 [4] Lee Y K, Chandrasekaran R, Shynk J J. Separation of cochannel GSM signals using an adaptive array[J]. IEEE Trans Signal Processing, 1999, 47(7):1977~1987 [5] 崔炎, 吕善伟,毛峡. 用阵列抑制TDMA无线通信系统中的共信道干扰[J].电子学报,2002,30(12):1790~1793 Cui Yan, Lü Shanwei, Mao Xia.Use arrays in TDMA mobile communication for canceling cochannel interferences[J].Acta Electronica Sinica,2002,30(12):1790~1793(in Chinese) [6] Xu G. Experimental evaluation of smart antenna system performance for wireless communications[J]． IEEE Trans Antennas and Propagation, 1998, 46(6):749~757 [7] Jeng S S, Xu G. Experimental studies of spatial signature variation at 900 MHz for smart antenna system[J]. IEEE Trans Antennas and Propagation, 1998, 46(7):953~962 [8] Shynk J J, Gooch R P. The constant modulus array for cochannel signal copy and direction finding[J]. IEEE Trans Signal Processing, 1996,44(3):652~ 660 [9] 姚敏立, 金梁, 殷勤业. 空间特征的累积域估计算法与共信道相干源波达方向估计[J]. 西安交通大学学报,1999, 33(5):17~20 Yao Minli, Jin Liang, Yin Qinye. Spatial signature estimation algorithm in cumulant domain for direction finding of co-channel correlated signals[J].Journal of Xian Jiaotong University ,1999,33(5):17~20(in Chinese)

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