高技术通讯2011，Vol.21Issue(2)：124-131,8.DOI:10.3772/j.issn.1002-0470.2011.02.003
放大转发OFDM中继系统的一种叠加导频辅助信道估计和联合数据检测算法
Superimposed pilot aided channel estimation and joint signal detection for amplify-and-forward relays in an OFDM system
摘要
Abstract
The authors of the paper utilized the superimposed pilot (SP) to estimate the initial channel state information (CSI)of the equivalent channels of amplify-and-forward (AF) OFDM relaying systems without the direct channel between the source node and the destination node, and formed the SP aided channel estimation and joint signal detection algorithm with the help of the maximal ratio combining (MRC) receiver at the destination node. Meanwhile, the closed form of the theoretical average symbol error ratio (ASER) for the proposed algorithm was derived. The simulation results show that the proposed algorithm can obtain the satisfactory performance while the spectral efficiency can be improved because of using the SP.关键词
放大转发(AF)/中继/正交频分复用(OFDM)/叠加导频(SP)/信道估计Key words
amplify-and-forward (AF)/ relaying/ OFDM/ superimposed pilot (SP)/ channel estimation引用本文复制引用
屠佳,蔡跃明..放大转发OFDM中继系统的一种叠加导频辅助信道估计和联合数据检测算法[J].高技术通讯,2011,21(2):124-131,8.基金项目
国家自然科学基金(60972051),国家科技重大专项(2010ZX(13006-002-04)和江苏省自然科学基金(BK2010101)资助项目. （60972051）
