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Energy-efficient hybrid opportunistic cooperative protocol for single-carrier frequency division multiple access-based networks

Energy-efficient hybrid opportunistic cooperative protocol for single-carrier frequency division multiple access-based networks

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© The Institution of Engineering and Technology
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In this study, a new energy-efficient hybrid opportunistic cooperative (HOC) transmission protocol is proposed for single-carrier frequency division multiple access (SC-FDMA)-based cooperative networks. The author considers a single source–destination pair and multiple relays network. The proposed protocol improves the energy efficiency of SC-FDMA-based networks by selecting the most energy-efficient cooperative transmission protocol from a set of available protocols according to the current channel state information. The protocols considered in the development of the HOC protocol are amplify-and-forward, decode-and-forward, compress-and-forward and estimate-and-forward. Computer simulation is done over four different scenarios of channel conditions. The obtained results show that the proposed HOC protocol significantly improves the delay-limited capacity and minimises the outage probability of SC-FDMA-based cooperative networks. The results also show that the minimum required average total power in the proposed HOC protocol is less than that of opportunistic decode-and-forward by 0.55 dB.

Inspec keywords: probability; frequency division multiple access; channel capacity; amplify and forward communication; protocols; delays; cooperative communication; wireless channels; energy conservation; decode and forward communication; relay networks (telecommunication)

Other keywords: delay-limited capacity; single-carrier frequency division multiple access-based cooperative network; amplify-and-forward communication; compress-and-forward communication; outage probability; estimate-and-forward communication; HOC protocol; SC-FDMA-based cooperative network; energy-efficient hybrid opportunistic cooperative protocol; single source-destination pair; multiple relay network; current channel state information; decode-and-forward communication; gain 0.5 dB

Subjects: Protocols; Radio links and equipment; Other topics in statistics; Multiple access communication

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-com.2012.0051
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