COFDM系统在非理想定时同步条件下的信道估计

Channel Estimation Technique for COFDM System in Wireless Channel with Timing Offset Error

该文深入研究了数字电视地面无线广播COFDM解调方案中的信道估计与内插技术,针对接收系统前端符号定时同步误差对于信道估计性能的影响,提出了两种适用于COFDM梳状导频系统的信道估计解决方案,并给出了其性能和可适用性分析。

This paper investigates the channel estimation and interpolation technique in digital video broadcasting COFDM demodulation scheme. To combat the OFDM symbol timing synchronization offset error,it proposes two channel estimation methods suitable for the comb-type pilot scheme.and the analyse of performance and adaptation is also presented.