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A Hybrid Adaptive Relay Technique for Cooperative Communication System

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Abstract

Cooperative communication will increase the channel capacity, when the communicating terminals exceed more than two. Therefore, a relay is termed, as three-terminal unit is a fundamental for user cooperation. The cooperation provides throughput enhancement, reliability, and coverage improvement for wireless communication. Relay technique plays a vital role in cooperative communication in terms of increasing coverage range as well as spectral efficiency. In existing techniques Amplify Forward increase the noise and Decode Forward increase the computational cost of the receiver. In order to overcome the above limitation, a hybrid adaptive relay technique is proposed for cooperative communication system, which will initially check the channel quality of the end user received SNR. When the receiver does not able to decode the message, then the user will choose relay signal. We derived a closed form expression to find the outage probability and channel capacity for the Rayleigh fading channel. Finally, simulation results show the performance of proposed adaptive relay technique in comparison with traditional relay technique by considering both perfect and imperfect CSI.

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Authors and Affiliations

  1. Sathyabama University, Chennai, Tamilnadu, India

    Lenin S.B

  2. Manakular Vinayagar Institute of Technology, Pondicherry, India

    Malarkkan S

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  1. Lenin S.B
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  2. Malarkkan S
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Correspondence to Lenin S.B.

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S.B, L., S, M. A Hybrid Adaptive Relay Technique for Cooperative Communication System. Wireless Pers Commun 103, 2245–2258 (2018). https://doi.org/10.1007/s11277-018-5907-y

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  • DOI: https://doi.org/10.1007/s11277-018-5907-y

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