摘要
为改善LAS-CDMA系统下行链路中使用线性插值进行信道估计时的系统性能,提出使用导频符号信道参数的Chebyshev拟合多项式的数学插值估计信道参数的方法。结果表明系统性能可以比线性插值的信道估计方法提高1dB左右。很好的改善快衰落信道估计的准确性。
In order to improve the channel estimation＇ s performance using linear interpolation in LASMAX downlink transmitting, a channel estimation method using the Chebyshev polynomials as the fitting and interpolafion polynomial of the cofficients are proposed. The results show that the method can improve the receiver＇s BER performance about 1dB compared with the estimation method using linear interpolafiorL Thus the estimation accuracy can be improved distinctly in fast fading channel.
出处
《电子测量技术》
2006年第1期62-62,72,共2页
Electronic Measurement Technology
