现代电子技术2016，Vol.39Issue(23)：29-33,5.DOI:10.16652/j.issn.1004-373x.2016.23.008
基于空间分集增益的分布式快速空频编码算法
Distributed fast space-frequency encoding algorithm based on space diversity gain
摘要
Abstract
Aiming at the downlink transmission problem of the coordinated multi⁃point(CoMP)wireless communication sys⁃tem,a distributed fast space⁃frequency coding(DF⁃SFC)scheme is presented. The cell⁃edge users are grouped and the sub⁃car⁃riers among neighbor cells are shared to obtain the space subset gain,so as to alleviate the inter⁃carrier interference(ICI). In distributed decoder design based on above step,the user decoding complexity is reduced by 50% of the same non⁃distributed space⁃frequency coding optimal decoder. The proposed scheme is compared with Alamouti multipoint cooperation and non⁃multi⁃point cooperation schemes. The achievable transmission rate of the relative distance among the user and its base station is studied. The performance upper and lower limits are inferred to determine the threshold of the cell edge users,realize the switching be⁃tween the proposed multipoint cooperation mode and non⁃multipoint cooperation mode,and improve the overall performance. The simulation results show that the proposed scheme is superior to the Alamouti multipoint cooperation and non⁃multipoint coo⁃peration schemes in service for the cell edge users.关键词
协作多点传输/载波间干扰/空频编码/子载波分配Key words
coordinated multi-point transmission/inter-carrier interference/space-frequency coding/subcarrier allocation分类
信息技术与安全科学引用本文复制引用
常本超,王丹,杨新锋..基于空间分集增益的分布式快速空频编码算法[J].现代电子技术,2016,39(23):29-33,5.基金项目
国家自然科学基金（41001292）；河南省重点科技攻关计划项目 （）
