EFFICIENT CYCLIC PREFIX RECONSTRUCTION USING DECISION FEEDBACK FILTER FOR CODED SINGLE-CARRIER SYSTEMS WITH FREQUENCY-DOMAIN EQUALIZATION (SC-FDE)  

作　　者：Wei Shengqun Wu Qihui Wang Jinlong Wang Fan 

机构地区：[1]Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China [2]Guangzhou Warzone Radio Regulatory Office, Guangzhou 510083, China

出　　处：《Journal of Electronics(China)》2007年第1期32-38,共7页电子科学学刊（英文版）

摘　　要：In this paper, an efficient Cyclic Prefix （CP） reconstruction scheme is proposed for Single-Carrier systems with Frequency-Domain Equalization （SC-FDE） that employ insufficient length of CP at the transmitter. By utilizing a decision feedback filter to cancel the residual InterSymbol Interference （ISI） in the equalized signal, the proposed scheme can effectively lower the low bound of performance for the CP reconstruction schemes and can greatly improve the Bit Error P^te （BER） performance of SC-FDE systems. In addition, the existing methods and the proposed scheme are also optimized. It is shown in the simulation results that, when the Signal-to-Noise Ratio （SNR） exceeds a certain threshold, the proposed scheme can achieve the low bound of performance for the existing methods. Moreover, by increasing the number of iteration or through optimization, the low bound can be outperformed.In this paper,an efficient Cyclic Prefix (CP) reconstruction scheme is proposed for Sin-gle-Carrier systems with Frequency-Domain Equalization (SC-FDE) that employ insufficient length of CP at the transmitter. By utilizing a decision feedback filter to cancel the residual InterSymbol In-terference (ISI) in the equalized signal,the proposed scheme can effectively lower the low bound of performance for the CP reconstruction schemes and can greatly improve the Bit Error Rate (BER) performance of SC-FDE systems. In addition,the existing methods and the proposed scheme are also optimized. It is shown in the simulation results that,when the Signal-to-Noise Ratio (SNR) exceeds a certain threshold,the proposed scheme can achieve the low bound of performance for the existing methods. Moreover,by increasing the number of iteration or through optimization,the low bound can be outperformed.

关 键 词：Cyclic Prefix （CP） reconstruction InterBlock Interference （IBI） InterSymbol Interference （ISI） Frequency-Domain Equalization （FDE） Decision feedback 

分 类 号：TN929.5[电子电信—通信与信息系统]