摘要
对基于导频的OFDM系统中信道估计的各种插值算法的性能进行了对比分析,对基于离散傅里叶变换的插值算法和其他插值算法进行了分析.计算机仿真证明了基于FFT的插值算法的插值精度在高信噪比条件下高于其它算法.
In wired and wireless OFDM systems, the channel response is obtained by interpolation of a piloted coarse estimation. Several interpolation algorithms for PSAM OFDM systems are discussed; performance of an FFT-based interpolation is evaluated. Finally, some suggestions are proposed.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2003年第1期41-45,72,共6页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金资助项目(60172052)
国家自然科学基金重大研究计划资助项目(90104018)
关键词
OFDM
正交频分复用
信道估计
插值算法
无线信道
Algorithms
Communication channels (information theory)
Computer simulation
Estimation
Fast Fourier transforms
Interpolation
Mathematical models
