摘要
针对超宽带正交频分复用(UWB OFDM)系统存在的子载波间干扰(ICI)问题,提出了联合估计(JE)接收机方法.该方法通过估计ICI矩阵,并进行相应处理以消除ICI.仿真结果表明,此方法可以有效消除ICI带来的"地板效应",使系统性能得到改善.
The joint estimation (JE) method is proposed to combat inter-carrier interference (ICI) problem in ultra-wideband orthogonal frequency division multiplexing (UWB-OFDM) system. The JE receiver can estimate the ICI matrix and eliminate the interference by multiply the received signal with the inversion of ICI matrix. Simulation results show that the JE receiver could eliminate the error floor that is brought about by ICI.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2005年第3期26-28,共3页
Journal of Beijing University of Posts and Telecommunications
基金
国家"863计划"项目(2003AA123240)
关键词
超宽带正交频分复用
联合估计
载波间干扰
Broadband networks
Carrier communication
Communication channels (information theory)
Estimation
Orthogonal frequency division multiplexing
