TDS-OFDM系统中信道估计方法的研究  

Method Research of Channel Estimation in TDS-OFDM System

作　　者：黄玮 黄媛[2] 

机构地区：[1]如意电器总公司,陕西咸阳712099 [2]陕西省行政学院,陕西西安710098

出　　处：《现代电子技术》2008年第11期47-49,52,共4页Modern Electronics Technique

摘　　要：信道估计是通信领域的一个研究热点,它是进行相关检测、解调、均衡的基础。针对DMB-T系统中的时域同步信道估计进行了研究,在算法级对其进行了详细的分析并提出了改进得到更优的性能。提出的算法采用PN序列的相关技术得到信道估计,通过比较不同的相关方法所得到的信道,确定最终输出的信道冲激响应。Channel estimation technique is the hotspot of research on the communications filed as being groundwork for processing the correlation detecting,demodulation and equalization.To estimate the channel impulse response definitely without increase the complexity of the system has become a research direction.In this thesis,we analyze the time-domain synch-ronous,using PN sequence correlation to get channel estimation,optimize and confirm the final estimation after comparing.The arithmetic simulation indicates the correctness of the design.

关 键 词：TDS—OFDM 信道估计 PN序列 DMB—T 

分 类 号：TN911.23[电子电信—通信与信息系统]