| TD-LMS在TD-SCDMA上行接收机中的应用 |
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| 引用本文： | 陈琦帆,程时昕.TD-LMS在TD-SCDMA上行接收机中的应用[J].电路与系统学报,2004,9(6):81-85. |
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| 作者姓名： | 陈琦帆 程时昕 |
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| 作者单位： | 东南大学,移动通信国家重点实验室,江苏,南京,210096 |
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| 基金项目： | 国家 863 高技术发展重大基金资助项目(2002AA123031)，NOKIA 基金资助项目 |
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| 摘 要： | 智能天线技术是TD-SCDMA系统中的一项关键技术。本文将研究TD-LMS(Transform Domain Least Mean Square)在TD-SCDMA上行自适应波束成型中的应用。首先通过误比特性能的比较发现基于小波的正交阵比常用的离散余弦变换正交阵更加适合于TD-LMS算法；其次为了检验这样一种算法的实用性，研究了定点计算的性能。蒙特卡罗仿真和复杂度分析的结果表明，基于小波变换的TD-LMS算法可以在自适应波束成型中得到应用以达到性能和复杂度的折衷。
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| 关 键 词： | TD-SCDMA TD-LMS LMS RLS 自适应波束成型 定点性能 |
| 文章编号： | 1007-0249(2004)06-0081-05 |
| 修稿时间： | 2003年5月26日 |
TD-LMS based TD-SCDMA uplink receiver |
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| CHEN Qi-fan,CHENG Shi-xin.TD-LMS based TD-SCDMA uplink receiver[J].Journal of Circuits and Systems,2004,9(6):81-85. |
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| Authors: | CHEN Qi-fan CHENG Shi-xin |
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| Abstract: | Smart antenna is a key technology in TD-SCDMA system. At the beginning of this paper, the application of TD-LMS to uplink adaptive beam-forming process in TD-SCDMA system is investigated. Through BER (Bit Error Rate) comparison, it is found that wavelet transform based orthogonal matrix is better than DCT based orthogonal matrix. Then, finite precision performance is studied to verify the feasibility of the proposed wavelet-based algorithm. Simulation results and complexity analysis show that wavelet-based TD-LMS is an efficient algorithm to be used to adaptive beam-forming process aiming at a tradeoff between performance and complexity. |
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| Keywords: | TD-SCDMA TD-LMS LMS RLS adaptive beam-forming finite precision performance |
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