| LDPC编码的自适应放大转发协作通信方案 |
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| 引用本文： | 刘焕兵,严晓兰,陈翔,姜晖. LDPC编码的自适应放大转发协作通信方案[J]. 电视技术, 2012, 36(15): 87-89,119 |
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| 作者姓名： | 刘焕兵 严晓兰 陈翔 姜晖 |
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| 作者单位： | 解放军电子工程学院,解放军电子工程学院,解放军电子工程学院,解放军电子工程学院 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘 要： | 针对放大转发协作通信系统中,中继放大功率倍数固定导致系统功率效率较低的问题,提出了一种低密度奇偶校验码(LDPC)编码的自适应调整放大倍数的放大转发算法,在保证一定的误码率要求的前提下,最大化地提高系统功率效率。仿真结果表明,在固定功率放大转发方案和自适应放大转发方案都满足给定误码率的条件下,后者能更加有效地利用系统功率。
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| 关 键 词： | 用户间协作 放大转发 互信息模型 协作通信 低密度奇偶校验码 |
| 收稿时间： | 2012-02-09 |
| 修稿时间： | 2012-02-09 |
LDPC Coded Adaptive Amplify-and-Forward User Cooperation Scheme |
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| Liu Huanbing,Yan Xiaolan,Chen Xiang and Jiang Hui. LDPC Coded Adaptive Amplify-and-Forward User Cooperation Scheme[J]. Ideo Engineering, 2012, 36(15): 87-89,119 |
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| Authors: | Liu Huanbing Yan Xiaolan Chen Xiang Jiang Hui |
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| Affiliation: | Electronic Engineering Institute,Electronic Engineering Institute,Electronic Engineering Institute,Electronic Engineering Institute |
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| Abstract: | Since the amplifier gain of relay node is set fixed, the efficiency of power is not high for the amplify-and-forward scheme in user cooperation. This paper presents an algorithm which can adaptively adjust the gain. The adaptive scheme improves the utilization ratio of energy in the presence of the reliability requirement. Theoretical analysis and simulation results demonstrate that the adaptive algorithm takes advantage of power more efficiently than the traditional fixed scheme with the given error rate. |
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| Keywords: | user cooperation amplify-and-forward mutual information model cooperative communication LDPC code |
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