一种新的交织认知无线电系统中继协作方案

2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010) Pub Date : 2010-11-01 DOI:10.1109/ISABEL.2010.5702764

Ahmed A. Naguib, A. Elezabi, M. Nafie

{"title":"一种新的交织认知无线电系统中继协作方案","authors":"Ahmed A. Naguib, A. Elezabi, M. Nafie","doi":"10.1109/ISABEL.2010.5702764","DOIUrl":null,"url":null,"abstract":"In this paper, we investigate the benefits of using cooperative relays in interweave (opportunistic) cognitive radio systems. A novel distributed space frequency (DSF) code for relay cooperation is presented. The code is designed to be a multi-user multi-OFDM channels code. It achieves a cooperative diversity gain of order NL for all users, where N is the number of relays and L is the number of paths in the multi-path fading channel. Simulation results show that using this DSF code by relays in the proposed system significantly increases system throughput. This code depends on transmitting the signal of each secondary user on a number of channels. Hence, each source will be less sensitive to spatial and temporal variations in channels availability which is one of the main problems in interweave cognitive radio systems.","PeriodicalId":165367,"journal":{"name":"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A novel scheme for relay cooperation in interweave cognitive radio systems\",\"authors\":\"Ahmed A. Naguib, A. Elezabi, M. Nafie\",\"doi\":\"10.1109/ISABEL.2010.5702764\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we investigate the benefits of using cooperative relays in interweave (opportunistic) cognitive radio systems. A novel distributed space frequency (DSF) code for relay cooperation is presented. The code is designed to be a multi-user multi-OFDM channels code. It achieves a cooperative diversity gain of order NL for all users, where N is the number of relays and L is the number of paths in the multi-path fading channel. Simulation results show that using this DSF code by relays in the proposed system significantly increases system throughput. This code depends on transmitting the signal of each secondary user on a number of channels. Hence, each source will be less sensitive to spatial and temporal variations in channels availability which is one of the main problems in interweave cognitive radio systems.\",\"PeriodicalId\":165367,\"journal\":{\"name\":\"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)\",\"volume\":\"49 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISABEL.2010.5702764\",\"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 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISABEL.2010.5702764","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

摘要

在本文中，我们研究了在交织(机会)认知无线电系统中使用合作中继的好处。提出了一种用于中继合作的分布式空间频率(DSF)编码。该代码被设计成一个多用户多ofdm信道代码。实现了所有用户的协同分集增益为NL阶，其中N为中继数，L为多径衰落信道中的路径数。仿真结果表明，在该系统中使用DSF码可以显著提高系统吞吐量。该代码依赖于在多个信道上传输每个辅助用户的信号。因此，每个源对信道可用性的时空变化不太敏感，这是交织认知无线电系统的主要问题之一。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

A novel scheme for relay cooperation in interweave cognitive radio systems

In this paper, we investigate the benefits of using cooperative relays in interweave (opportunistic) cognitive radio systems. A novel distributed space frequency (DSF) code for relay cooperation is presented. The code is designed to be a multi-user multi-OFDM channels code. It achieves a cooperative diversity gain of order NL for all users, where N is the number of relays and L is the number of paths in the multi-path fading channel. Simulation results show that using this DSF code by relays in the proposed system significantly increases system throughput. This code depends on transmitting the signal of each secondary user on a number of channels. Hence, each source will be less sensitive to spatial and temporal variations in channels availability which is one of the main problems in interweave cognitive radio systems.

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

2010 3rd International Symposium on Applied Sciences in Biomedical and Communication Technologies (ISABEL 2010)

自引率

0.00%

发文量