Design of multi-antenna relaying for OFDM in impulsive noise environment  

作　　者：Ahmed El-Mahdy MennaTullah Seraj-Eldin 

机构地区：[1]Professor in the Faculty of Information Engineering and Technology, German University in Cairo, Cairo, Egypt [2]The Faculty of Information Engineering and Technology, German University in Cairo, Cairo, Egypt

出　　处：《Digital Communications and Networks》2019年第3期189-195,共7页数字通信与网络（英文版）

摘　　要：A low-complexity multi-antenna relaying scheme is proposed for Orthogonal Frequency Division Multiplexing (OFDM) in the presence of Class-A Impulsive Noise (IN). One way and two way relaying are considered. The signal is transmitted and received by two terminal nodes, each with a single antenna in two time phases. In the proposed design, the processing at the relay consists of Maximal-Ratio Combining (MRC) or Power-based Selection Combining (PSC) for receive combining, Amplify and Forward (AF) for power scaling, and Space Time Block Coding (STBC) for transmit diversity. Channel State Information (CSI), Discrete Fourier Transform (DFT), and Inverse Discrete Fourier Transform (IDFT) are not needed. The Selective Mapping (SLM) technique is used at the transmitter to reduce the Peak-to-Average Power Ratio (PAPR) of the OFDM signal. Then, at the receiver, the clipping technique is used to reduce the impulses that result from the impulsive noise. The proposed system reduces the complexity of the conventional system, which uses multi-relay with a single antenna. Simulation results show that the Bit Error Rate (BER) of the proposed scheme outperforms that of the conventional scheme due to the diversity inherent in the proposed scheme.

关 键 词：Orthogonal frequency DIVISION MULTIPLEXING IMPULSIVE noise MULTI-ANTENNA relay RECEPTION combining Transmit diversity Peak-to-average power ratio reduction techniques 

分 类 号：TN[电子电信]