差分编码COFDM系统的联合迭代检测与解码

W. V. Houtum, F. Willems
{"title":"差分编码COFDM系统的联合迭代检测与解码","authors":"W. V. Houtum, F. Willems","doi":"10.1109/ICTEL.2010.5478774","DOIUrl":null,"url":null,"abstract":"Divsalar and Simon showed that with multi-symbol differential detection, the performance gap between two-symbol differential detection and coherent detection of differentially encoded phase shift keying can be closed. To close this gap for single-carrier differentially encoded phase shift keying with interleaving and convolutional encoding, Peleg et al. proposed a joint and iterative multi-symbol detection and decoding scheme that regards the differential encoding as inner component code of a serially concatenated code. Several data-, audio- and video-broadcast systems are differentially encoded multi-carrier systems and use time multiplexing of the transmitted services to reduce receiver complexity. The commonly used receiver-structure for these systems does not perform joint and iterative multi-symbol detection and decoding. The present work extends the use of the single-carrier iterative decoding scheme proposed by Peleg et al. to demodulate differentially encoded multi-carrier systems. A novel two-dimensional block-based demodulation is proposed that maintains both the multi-symbol differential detection coding gain and the reduction in receiver complexity by time-multiplexing. Simulations show that with comparable receiver-complexity, the proposed multi-carrier scheme outperforms the single-carrier scheme by ≈ 0.9 dB. Furthermore, the receiver complexity can be reduced up to a factor of four and a half compared to the single-carrier scheme. Finally, the proposed multi-carrier scheme outperforms ”classical” two-symbol differential detection with soft-decision Viterbi-decoding by ≈ 2.8 dB with one iteration and by ≈ 1.2 dB without iterations.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Joint and iterative detection and decoding of differentially encoded COFDM systems\",\"authors\":\"W. V. Houtum, F. Willems\",\"doi\":\"10.1109/ICTEL.2010.5478774\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Divsalar and Simon showed that with multi-symbol differential detection, the performance gap between two-symbol differential detection and coherent detection of differentially encoded phase shift keying can be closed. To close this gap for single-carrier differentially encoded phase shift keying with interleaving and convolutional encoding, Peleg et al. proposed a joint and iterative multi-symbol detection and decoding scheme that regards the differential encoding as inner component code of a serially concatenated code. Several data-, audio- and video-broadcast systems are differentially encoded multi-carrier systems and use time multiplexing of the transmitted services to reduce receiver complexity. The commonly used receiver-structure for these systems does not perform joint and iterative multi-symbol detection and decoding. The present work extends the use of the single-carrier iterative decoding scheme proposed by Peleg et al. to demodulate differentially encoded multi-carrier systems. A novel two-dimensional block-based demodulation is proposed that maintains both the multi-symbol differential detection coding gain and the reduction in receiver complexity by time-multiplexing. Simulations show that with comparable receiver-complexity, the proposed multi-carrier scheme outperforms the single-carrier scheme by ≈ 0.9 dB. Furthermore, the receiver complexity can be reduced up to a factor of four and a half compared to the single-carrier scheme. Finally, the proposed multi-carrier scheme outperforms ”classical” two-symbol differential detection with soft-decision Viterbi-decoding by ≈ 2.8 dB with one iteration and by ≈ 1.2 dB without iterations.\",\"PeriodicalId\":208094,\"journal\":{\"name\":\"2010 17th International Conference on Telecommunications\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 17th International Conference on Telecommunications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICTEL.2010.5478774\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 17th International Conference on Telecommunications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICTEL.2010.5478774","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3

摘要

Divsalar和Simon的研究表明,采用多符号差分检测,可以缩小差分编码相移键控的双符号差分检测和相干检测之间的性能差距。为了弥补交错和卷积编码的单载波差分编码相移键控的这一缺陷,Peleg等人提出了一种联合迭代的多符号检测和解码方案,该方案将差分编码视为串行连接码的内部分量码。一些数据、音频和视频广播系统是差分编码的多载波系统,并使用传输业务的时间复用来降低接收机的复杂性。这些系统常用的接收机结构不能进行联合迭代的多符号检测和解码。目前的工作扩展了Peleg等人提出的单载波迭代解码方案的使用,以解调差分编码的多载波系统。提出了一种新的二维分块解调方法,该方法既能保持多符号差分检测编码增益,又能通过时间复用降低接收机复杂度。仿真结果表明,在接收机复杂度相当的情况下,多载波方案的性能优于单载波方案约0.9 dB。此外,与单载波方案相比,接收机的复杂性可以降低到4.5倍。最后,本文提出的多载波方案比“经典”软判决viterbi解码双符号差分检测在一次迭代和不迭代时分别高出约2.8 dB和约1.2 dB。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Joint and iterative detection and decoding of differentially encoded COFDM systems
Divsalar and Simon showed that with multi-symbol differential detection, the performance gap between two-symbol differential detection and coherent detection of differentially encoded phase shift keying can be closed. To close this gap for single-carrier differentially encoded phase shift keying with interleaving and convolutional encoding, Peleg et al. proposed a joint and iterative multi-symbol detection and decoding scheme that regards the differential encoding as inner component code of a serially concatenated code. Several data-, audio- and video-broadcast systems are differentially encoded multi-carrier systems and use time multiplexing of the transmitted services to reduce receiver complexity. The commonly used receiver-structure for these systems does not perform joint and iterative multi-symbol detection and decoding. The present work extends the use of the single-carrier iterative decoding scheme proposed by Peleg et al. to demodulate differentially encoded multi-carrier systems. A novel two-dimensional block-based demodulation is proposed that maintains both the multi-symbol differential detection coding gain and the reduction in receiver complexity by time-multiplexing. Simulations show that with comparable receiver-complexity, the proposed multi-carrier scheme outperforms the single-carrier scheme by ≈ 0.9 dB. Furthermore, the receiver complexity can be reduced up to a factor of four and a half compared to the single-carrier scheme. Finally, the proposed multi-carrier scheme outperforms ”classical” two-symbol differential detection with soft-decision Viterbi-decoding by ≈ 2.8 dB with one iteration and by ≈ 1.2 dB without iterations.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信