| LTE-Advanced系统中改进的载波聚合HARQ进程映射机制 |
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| 引用本文： | 徐昌彪,武岳,鲜永菊.LTE-Advanced系统中改进的载波聚合HARQ进程映射机制[J].重庆邮电学院学报(自然科学版),2010(2). |
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| 作者姓名： | 徐昌彪 武岳 鲜永菊 |
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| 作者单位： | 重庆邮电大学通信与信息工程学院; |
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| 基金项目： | 重庆市科委自然科学基金(CSTC,2009AB2088)~~ |
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| 摘 要： | 分析了LTE-Advanced系统在引入载波聚合技术以后,混合自动重传请求(HARQ)进程映射机制的设计问题。简述了载波聚合技术和HARQ技术原理,介绍了目前载波聚合中的HARQ映射方式,指出目前映射方式存在的问题,并针对该问题提出了一种半静态可变HARQ进程映射方案,在不同条件下对该方案进行了仿真分析,仿真结果说明新方案实现了对分集增益与开销的折中,能够改善系统综合性能,具有良好的应用前景。
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| 关 键 词： | LTE-Advanced 载波聚合 混合自动重传请求 |
Improved mapping mechanism of carrier aggregation and HARQ in LTE-Advanced system |
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| XU Chang-biao,WU Yue,XIAN Yong-ju.Improved mapping mechanism of carrier aggregation and HARQ in LTE-Advanced system[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2010(2). |
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| Authors: | XU Chang-biao WU Yue XIAN Yong-ju |
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| Institution: | College of Communication and Information Engineering;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China |
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| Abstract: | This paper analyzes how to design the hybrid automatic repeat request(HARQ)mapping mechanism in LTE-Advanced system using the technology of carrier aggregation.First the basic conception of carrier aggregation and HARQ was introduced.And then,the current HARQ mapping mechanisms and their existing problems were presented.Finally,a semi-static HARQ mapping mechanism was proposed to solve these problems.By link simulations under different conditions,it was proved that the new mechanism achieved the compromise ... |
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