| 带Turbo码的OFDM频域链路自适应方案 |
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| 引用本文： | 邱赐云,戎璐,俞文琰.带Turbo码的OFDM频域链路自适应方案[J].华东理工大学学报(自然科学版),2009,35(1). |
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| 作者姓名： | 邱赐云 戎璐 俞文琰 |
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| 作者单位： | 1. 中国科学院上海微系统与信息技术研究所,上海无线通信研究中心,上海,200050
2. 中国检验认证集团上海有限公司,上海,200085 |
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| 基金项目： | 科技部对欧盟科技合作专项——个人网络无线通信系统关键技术研究;;上海研发公共服务平台建设专项(07dz22023) |
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| 摘 要： | 针对最优比特与功率加载算法需完全已知信道质量信息而在实际系统不可行的问题,提出基于资源块互信息的实用解决方案;针对频率选择性衰落和Turbo码交织深度要求较高的问题,提出根据互信息为不同资源块计算调制方式而对多个资源块内插计算相同码率的频域链路自适应解决方案。分析与仿真结果表明:基于资源块互信息的频域链路自适应解决方案能获得接近最优比特与功率加载算法的频谱效率。
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| 关 键 词： | 最优比特与功率加载 链路自适应 互信息 |
Frequency-Domain Link Adaptation Scheme for Turbo Coded OFDM |
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| QIU Ci-yun,RONG Lu,YU Wen-yan.Frequency-Domain Link Adaptation Scheme for Turbo Coded OFDM[J].Journal of East China University of Science and Technology,2009,35(1). |
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| Authors: | QIU Ci-yun RONG Lu YU Wen-yan |
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| Institution: | 1.Shanghai Institute of Micro-system and Information Technology;Shanghai Research Center for Wireless Communication;Shanghai 200050;China;2.China Certification & Inspection Group Shanghai Co.;Ltd;Shanghai 200085;China |
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| Abstract: | The complete channel quality information is required to implement optimal bit and power loading algorithm,which is difficult to attain in practical system.To this end,this paper proposes a(solving) method based on resource block(RB) mutual information.A frequency domain link adaptative scheme is adopted to cope with the problems of combating frequency selective fading and insufficiency interleaving-(depth) of advanced channel coding(Turbo/LDPC).Firstly,modulation order is computed based on mutual informatio... |
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| Keywords: | OFDM Turbo optimal bit and power loading link adaptation mutual information |
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