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TD-SCDMA集群系统中多小区联合检测和宏分集技术的研究

Multi-cell Joint Detection and Macrodiversity for TD-SCDMA Trunking System
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摘要 在TD-SCDMA集群系统的一个载频和时隙中,信号是以广播的方式传输的,这就导致了信号的小区间多址干扰(MAI)和码间串扰(ISI)很严重,文中讨论两种可以同时抵消MAI和ISI的联合检测算法(迫零块均衡器和最小均方误差块均衡器)对TD-SCDMA集群系统性能的影响。同时,考虑到集群系统的特点,当同目标群组的用户分别在不同的小区的时候,宏分集技术可以用来进一步提高系统的性能。仿真结果表明联合检测算法和宏分集技术可以明显提高系统性能。 Broadcast transmission is used in the downlink for TD-SCDMA trunking systems in the same frequency and same time slot,so the MAI of multi-cell is very serious.In this paper,we discuss the classical joint detection algorithms used for interference suppression.Considering the characteristics of trunking system,the macro-diversity model can be used to improve the system performance,when users of target group are distributed in different cells.The results of simulation show that joint detection and macro-diversity can significantly improve system performance.
出处 《南京邮电大学学报(自然科学版)》 北大核心 2012年第4期38-41,47,共5页 Journal of Nanjing University of Posts and Telecommunications:Natural Science Edition
基金 国家高技术研究发展计划(863计划)(2009AA011302)资助项目
关键词 TD-SCDMA集群系统 迫零块均衡器 最小均方误差均衡器 宏分集 TD-SCDMA trunking system ZF-BLE MMSE-BLE macrodiversit
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参考文献10

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