摘要
提出了一种适用于正交频分复用通信系统的非盲信道估计算法。与传统算法在保护间隔内插入循环前缀不同 ,该算法在保护间隔内插入参考信号 ,利用该参考信号实现信道频域估计和信道失真补偿。理论分析和计算机仿真表明 :该算法与传统算法相比误码性能接近 ,而信道传输效率提高约 2 0 %。因此 。
A non blind channel estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems in multipath channels was proposed. The known training sequences are inserted into period originally used for CP. Channel parameters are estimated in frequency domain based on the pilot analysis. Computer simulation shows that the performance of the proposed algorithm is nearly the same as that of the conventional one, but the transmission rate is increased about 20%. Therefore, the proposed algorithm has a wide application for high speed wireless communication systems.
出处
《中南民族大学学报（自然科学版）》
CAS
2003年第2期32-36,共5页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家民委重点科研基金资助项目 (2 0 0 2 ABA0 0 3)
