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OFDM系统信道估计算法及其FPGA实现
引用本文:王勇,葛建华,陆震,于湘珍,艾渤.OFDM系统信道估计算法及其FPGA实现[J].电路与系统学报,2004,9(6):139-142.
作者姓名:王勇  葛建华  陆震  于湘珍  艾渤
作者单位:1. 西安电子科技大学,综合业务网国家重点实验室,陕西,西安,710071
2. 上海交通大学,电子信息学院,上海,200030
3. 西安武警工程学院,电子技术教研室,陕西,西安,710086
基金项目:国家自然科学基金重点项目(60332030),移动宽带视频广播传输系统及关键技术研究
摘    要:文章深入分析研究了欧洲数字高清晰度电视地面广播(DVB-T)系统的COFDM调制方案。通过对大量算法的仿真,总结出适用于该方案且易于实现的信道估计算法,结合Matlab、Quartus仿真及工程应用,提出一种基于FPGA的电路设计,并完成了相应的硬件电路。

关 键 词:高清晰度数字电视(HDTV)  正交频分复用(OFDM)  信道估计  场可编程门阵列(FPGA)
文章编号:1007-0249(2004)06-0139-04
修稿时间:2004年8月9日

Channel estimation and its FPGA realization in OFDM system
WANG Yong,GE Jian-hua,LU Zhen,YU Xiang-zhen,AI Bo.Channel estimation and its FPGA realization in OFDM system[J].Journal of Circuits and Systems,2004,9(6):139-142.
Authors:WANG Yong  GE Jian-hua  LU Zhen  YU Xiang-zhen  AI Bo
Abstract:The COFDM modulation schemes for DVB-T system are surveyed extensively. A channel estimation algorithm most suitable for the scheme is proposed through lots of computer simulations. According to this algorithm, the Channel is estimed through 2D linear interpolation in pilot frequency both in time and frequency domains. Associated FPGA circuit is designed based on the Matlab, Quartus simulation and taking engineering application into account. The designed circuit based on the proposed algorithm is implemented in hardware. The experiment result is satisfactory.
Keywords:High Definition TV(HDTV)  Orthogonal Frequency Divison Multiplexing(OFDM)  channel estimation  Field                Programmable Gate Array(FPGA)
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