计算机应用研究2009，Vol.26Issue(8)：3077-3081,5.DOI:10.3969/j.issn.1001-3695.2009.08.081
VMIMO-OFDM系统中基于导频的多频偏和信道联合估计算法研究
Multiple CFOs and CIRs jointly estimation algorithm research based on pilot
摘要
Abstract
Based on the pilot of VMIMO-OFDM system, this paper proposed a jointly estimation algorithm for solve estimation problem between the multiple carrier frequency offset (CFOs) and channel impulse response (CIRs) at the wireless sensor network's destination node. As each transmitter-to-receiver link in wireless sensor networks had an individual CFO and CIR parameters with its local oscillator, so directly estimation all the parameters had become a multi-dimensional nonlinear problem. Based on the specially designed training sequences, the destination node could decouple the signal from different relay nodes by correlation and simplify the MD nonlinear problem to linear. The multiple CFOs could be identified from the correlation result, so that the CIRs could be estimated according to the maximum-likelihood principle.关键词
无线传感器网络/VMIMO-OFDM/最大似然准则/多频偏/信道冲激响应Key words
wireless sensor networks/VMIMO-OFDM/maximum-likelihood principle/multiple CFOs/multiple CIRs分类
信息技术与安全科学引用本文复制引用
郑春雷,姜建,姜华,刘海涛..VMIMO-OFDM系统中基于导频的多频偏和信道联合估计算法研究[J].计算机应用研究,2009,26(8):3077-3081,5.基金项目
国家"863"计划资助项目(2006AA01Z210) （2006AA01Z210）
