摘要
针对OFDM系统中导频数量过少,无法有效的获得完整的信道信息的特点,直接利用系统中的长前导序列作LS信道估计,分别在时域和频域上对该算法进行改进,仿真表明改进的算法能较好的抑制噪声的影响,提高系统的性能。
The charmel estimation algorithm is discussed which is suitable for IEEE802.16 OPDM systems . In the light of the amount of pilot frequency is less, a modified method of Least - Square（LS） channel estimation is proposed in the time domain and frequency domain based on long preamble. The effect of the improved algorithm is showed on suppressing the effect of noise through simulation. It is meaningful for the following research on channel estimation.
出处
《激光杂志》
CAS
CSCD
北大核心
2012年第5期30-31,共2页
Laser Journal
