一种基于强径选择的联合信道估计算法
doi: 10.3724/SP.J.1146.2007.01326
A Joint Channel Estimation Algorithm Based on Strong Paths Selection
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摘要: 用于TD-SCDMA系统的高精度联合多小区信道估计算法，存在运算复杂度高、可联合估计的干扰用户少等缺点。该文针对信道估计结果有强、弱径之分的特点，变选择强干扰用户为选择强径，提出基于强径选择的联合信道估计算法。从算法复杂度和误码率性能的分析可以看出：新算法不仅将复杂度降低了一半，而且在误码率性能上还略有提升。Abstract: The higher complexity and the less number of the joint estimation interfering users are the main disadvantages of the high accuracy joint multi-cell channel estimation algorithm. A strong paths selection based joint channel estimation algorithm is proposed by fully considering the difference between the strong paths and week paths in the channel estimation results. It is shown from the complexity and Bit Error Rate (BER) performance analysis, the proposed algorithm can reduce 50% complexity algorithm and improve the BER performance slightly.
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闫发军, 孙光永, 王文博. 采用扩展联合检测提高TDSCDMA系统的健壮性[J]. 北京邮电大学学报, 2005, 28(5):66-69.[2]Steiner B and Jung P. Optimum and suboptimum channelestimation for the uplink of CDMA mobile radio systemswith joint detection [J]. European Trans. TelecommunicationsRelated Techniques, 1994, 5(1): 39-50.[3]宋晓勤, 薛强, 李克. 无线移动通信系统中的联合信道估计方法与估计装置[P]. 中国发明专利: 200610011754.2, 2006.[4]彭木根, 王文博. TD-SCDMA 移动通信系统[M]. 第2 版, 北京:机械工业出版社, 2007, 第3 章.[5]Klein A, Kaleh G K, and Baier P W. Zero forcing andminimum mean square error equalization for multiuserdetection in Code-Division Multiple-Access channels [J].IEEE Trans. on Vehicular Technology.1996, 45(2):276-287[6]Vollmer M, Haardt M, and Gotze J. Comparative study ofjoint-detection techniques for TD-CDMA based mobile radiosystems[J].IEEE Journal on Selected Areas inCommunications.2001, 19(8):1461-1475[7]康绍莉, 裘正定, 李世鹤. TD-SCDMA 系统中低代价信道估计方法的改进[J]. 通信学报, 2002, 23(10): 125-130. -
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