JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM ›› 2016, Vol. 23 ›› Issue (5): 1-9.doi: 10.1016/S1005-8885(16)60051-1

• Wireless •     Next Articles

  Performance analyses of OFDM AF relaying system in the presence of phase noise with APS and IPS

Huang Jing1,Li Juhu1, Zhang Haiyan1   

  • Received:2016-05-24 Revised:2016-09-29 Online:2016-10-30 Published:2016-10-26
  • Contact: LI Ju-hu E-mail:lijuhu@bjfu.edu.cn
  • Supported by:
    the Fundamental Research Funds for the Central Universities of China (TD2014-01).

Abstract: This article investigates the significant performances of orthogonal frequency division multiplexing (OFDM)-based dual-hop system in the presence of phase noise (PN). A scenario with Rayleigh fading statistics on both hops is assumed. Amplification factor for this amplify-and-forward (AF) relay networks system is divided into two conditions, average power scaling (APS) and instantaneous power scaling (IPS). Before deriving signal-to-noise ratios (SNR) under APS and IPS, the Gaussianity of intercarrier interference (ICI) is proved firstly. The accurate closed-form expressions of end-to-end SNR cumulative distribution functions (CDF) and probability density functions (PDF) for both cases are obtained later. With the help of moment generating functions (MGF), we have closed-form asymptotic expressions of bit error rate (BER), which show that the BER of system in the presence of PN cannot exceed a fixed level even when SNR in high regime. Finally, simulations verify accuracy of the results. Conclusion analysis will provide a useful help in future application of the system.

Key words: OFDM-AF system, phase noise, average power scaling, instantaneous power scaling

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