| LTE-Advanced系统中改进的载波聚合HARQ进程映射机制 |
| |
| 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].重庆邮电大学学报(自然科学版),2010,22(2):170-173. |
| |
| 作者姓名： | 徐昌彪 武岳 鲜永菊 |
| |
| 作者单位： | 重庆邮电大学通信与信息工程学院,重庆,400065;重庆邮电大学通信与信息工程学院,重庆,400065;重庆邮电大学通信与信息工程学院,重庆,400065 |
| |
| 基金项目： | 重庆市科委自然科学基金 |
| |
| 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.
|
| 关 键 词： | LTE-Advanced 载波聚合 混合自动重传请求 |
| 收稿时间： | 2009/10/10 0:00:00 |
Improved mapping mechanism of carrier aggregation and HARQ in LTE-Advanced system |
| |
| 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,2010,22(2):170-173. |
| |
| Authors: | XU Chang-biao WU Yue XIAN Yong-ju |
| |
| Institution: | College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China |
| |
| 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 of diversity gain and overhead, improved the comprehensive performance of system and had a good application prospect. |
| |
| Keywords: | LTE-Advanced |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《重庆邮电大学学报(自然科学版)》浏览原始摘要信息 |
| 点击此处可从《重庆邮电大学学报(自然科学版)》下载免费的PDF全文 |
|
