摘要
在研究了瑞利衰落信道中基于时分复用的导频辅助的信道估计方法后,提出了使用导频信号信道参数估计值的Chebyshev多项式插值来估计信道参数的方法.通过仿真得到插值的Chebyshev多项式阶数对车速的系统误码率关系;同时,仿真结果也验证了这种关系是正确并且是可行的.与使用分段插值的线性插值相比,利用该方法,接收机的误比特性能得到显著改善.
The time-division multiplexing pilot-assisted channel estimation method was studied in the Rayleigh fading channel. A channel estimation method was proposed by employing the Chebyshev polynomial as the interpolation polynomial. The relationship between the mobile velocity and the order of interpolation polynomials was given. The simulation results show that the method can estimate the fast fading channel, and the channel parameters of the data can be estimated effectively. By using this estimation method, the system＇s BER performance, compared with linear interpolation method, can be improved distinctly.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2006年第2期102-105,共4页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(69931050)
关键词
码分多址
信道估计
CHEBYSHEV多项式
插值
code division multiple access
channel estimation
Chebyshev polynomial
interpolation
