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Performance Evaluation of Multi-hop Relaying over Non-Gaussian PLC Channels
Khaled M. Rabie,Bamidele Adebisi,Haris Gacanin,Galymzhan Nauryzbayev University,Augustine Ikpehai 한국통신학회 2017 Journal of communications and networks Vol.19 No.5
Relaying over power line communication (PLC) channelscan considerably enhance the performance and reliability ofPLC systems. This paper is dedicated to study and analyze theenergy efficiency of multi-hop cooperative relaying PLC systems. Incremental decode-and-forward (IDF) relying is exploited to reducethe transmit power consumption. The PLC channel is assumedto experience log-normal fading with impulsive noise. Theperformances of single-hop and conventional DF relaying systemsare also analyzed in terms of outage probability and energy efficiencyfor which analytical expressions are derived. Results showthat using more relays can improve the outage probability performance;however, this is achieved at the expense of increased powerconsumption due to the increased static power of the relays, especiallywhen the total source-to-destination distance is relativelysmall. Results also demonstrate that the IDF PLC system has betterenergy efficiency performance compared to the other schemes.
( Xinji Tian ),( Qianqian Li ),( Xingwang Li ),( Hui Zhang ),( Khaled Rabie ),( Charles Casimiro Cavalcante ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.11
In this paper, we consider a two-way relay non-orthogonal multiple access (TWR-NOMA) system with residual hardware impairments (RHIs) and channel estimation errors (CEEs), where two group users exchange their information via the decode-and-forward (DF) relay by using NOMA protocol. To evaluate the performance of the considered system, exact analytical expressions for the outage probability of the two groups users are derived in closed-form. Moreover, the asymptotic outage behavior in the high signal-to-noise ratio (SNR) regime is examined and the diversity order is derived and discussed. Numerical simulation results verify the accuracy of theoretical analyses, and show that: i) RHIs and CEEs have a deleterious effects on the outage probabilities; ii) CEEs have significant effects on the performance of the near user; iii) Due to the RHIs, CEEs, inter-group interference and intra-group interference, there exists error floors for the outage probability.