ICTACT Journal on Communication Technology

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Adaptive Power Allocation in Threshold-Based Hybrid Relaying System


Affiliations
1 Department of Electronics and Communication Engineering, Maulana Abul Kalam Azad University of Technology, India
2 Department of Electronics and Communication Engineering, National Institute of Technology, Silchar, India
     

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Performance of a single relay-based cooperative communication system in a wireless network is analyzed in this article. A single relay equipped with a single antenna employs a hybrid relay scheme. Based on the channel condition, either amplify or forward (AF) or adaptive decode and forward (ADF) scheme is employed in hybrid mode, which permits switching between the above mentioned dualistic schemes. The performance of the hybrid relay scheme has been examined in terms of symbol error rate (SER), outage probability and optimal power distribution for uncoded cooperative communication. A closed-form depiction for SER and outage probability for M-PSK signal has been derived, where the relay and the destination are considered to perform MRC combining of the message.

Keywords

Amplify and forward (AD), Adaptive Decode and Forward (ADF), SNR-based Adaptive Decode and Amplify Forward (SNR-ADAF), Symbol Error Rate (SER), Outage Probability.
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  • Adaptive Power Allocation in Threshold-Based Hybrid Relaying System

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Authors

Mousam Chatterjee
Department of Electronics and Communication Engineering, Maulana Abul Kalam Azad University of Technology, India
Banani Basu
Department of Electronics and Communication Engineering, National Institute of Technology, Silchar, India
Arnab Nandi
Department of Electronics and Communication Engineering, National Institute of Technology, Silchar, India
Chanchal Kumar De
Department of Electronics and Communication Engineering, Maulana Abul Kalam Azad University of Technology, India

Abstract


Performance of a single relay-based cooperative communication system in a wireless network is analyzed in this article. A single relay equipped with a single antenna employs a hybrid relay scheme. Based on the channel condition, either amplify or forward (AF) or adaptive decode and forward (ADF) scheme is employed in hybrid mode, which permits switching between the above mentioned dualistic schemes. The performance of the hybrid relay scheme has been examined in terms of symbol error rate (SER), outage probability and optimal power distribution for uncoded cooperative communication. A closed-form depiction for SER and outage probability for M-PSK signal has been derived, where the relay and the destination are considered to perform MRC combining of the message.

Keywords


Amplify and forward (AD), Adaptive Decode and Forward (ADF), SNR-based Adaptive Decode and Amplify Forward (SNR-ADAF), Symbol Error Rate (SER), Outage Probability.