互联网 qkzz.net
全刊杂志网:首页 > 女性 > 文章正文
刊社推荐

基于自适应量化信道信息的机会中继选择研究李 雁 唐 伦 陈前斌


摘 要:针对协同蜂窝网中基于发送量化信道状态信息的中继选择方案下,目的节点需要不停地获取所有中继处第一跳的信道信息而引起的系统开销问题,提出了一种基于自适应量化信道状态信息的机会中继选择方案。新方案下,仅在第一跳的瞬时信道条件高于预先设置的门限值时,各候选中继发送量化后的信道信息比特。仿真结果表明,改进方案在对系统性能影响不大的同时可以获得较高的比特利用率。同时,随着候选中继数从3增加至5时,中继点处设置的发送门限值可相应从0.267 1提升至0.575 6,这表明新方案具有较好的鲁棒性。
  关键词:协同分集; 虚拟天线阵列; 量化信道状态信息; 机会中继选择; 比特利用率
  中图分类号:TP393.03
  文献标志码:A
  
  文章编号:1001-3695(2010)02-0646-03
  doi:10.3969/j.issn.1001-3695.2010.02.067
  
  Opportunistic relay selection scheme based on adaptively
  quantized channel state information
  
  LI Yan, TANG Lun, CHEN Qian-bin
  
  (Key Laboratory of Mobile Communication Technology, Chongqing University of Posts & Telecommunications, Chongqing 400065, China)
  
  Abstract:In order to deal with the system overhead problem induced by transmit quantized bits of the first hop channel state information for destination to obtain global channel state information, this paper proposed the relay selection scheme based on adaptively transmitting the quantization bits of instantaneous channel state information. In the improved scheme, the candidate relayed transmit the quantized bits of the first hop channel state information only when the instantaneous channel condition was better than the threshold which was set in advance. Simulation result shows that the new scheme can improve the bit utilize efficiency and at the same time has little influence on the bit error rate of the system. Moreover, as the number of candidate relays increases from three to five, the appropriate threshold ranges from 0.267 1 to 0.575 6, this result shows that the improved scheme has robustness performance. ......
很抱歉,暂无全文,若需要阅读全文或喜欢本刊物请联系《计算机应用研究》杂志社购买。
欢迎作者提供全文,请点击编辑
分享:
 

了解更多资讯,请关注“木兰百花园”
分享:
 
精彩图文


关键字
支持中国杂志产业发展,请购买、订阅纸质杂志,欢迎杂志社提供过刊、样刊及电子版。
关于我们 | 网站声明 | 刊社管理 | 网站地图 | 联系方式 | 中图分类法 | RSS 2.0订阅 | IP查询
全刊杂志赏析网 2017