Relay selection for decode-and-forward cooperative vehicular networks with virtual noise modelling

Akın, Ayşe; İlhan, Hacı; Özdemir, Özgür

doi:10.1109/itst.2013.6685558

Cited by 2 publications

(1 citation statement)

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“…The outage and the SER performance of two-way communication are examined over cascaded Nakagamim fading channels in [35]. Moreover, the performance of VN-based detection technique for mitigating error propagation in wireless relay systems employing DF protocol is investigated in [36].…”

Section: Introductionmentioning

confidence: 99%

Relay selection for DF-based cooperative vehicular systems

Akın

İlhan

Özdemir

2015

J Wireless Com Network

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In this paper, error performance analysis of decode-and-forward (DF)-based cooperative vehicular networks with relay selection is investigated. All of the links in the system are modeled as cascaded Nakagami-m distributed random variables which provide a realistic description of an intervehicular channel. We employ virtual-noise (VN)-based demodulation, maximum likelihood (ML) demodulation, cooperative maximal ratio combining (C-MRC), and log-likelihood-ratio-based transmissions in mitigating error propagation effect encountered in DF cooperative networks. In order to obtain more effective solutions and improve the system performance, we introduce hybrid anti-error propagation approaches, namely VN-MRC, VN-ML, and VN-LLR in which relay selection criterion is derived by using conditional bit error rate (BER) expressions of VN technique while data detection is performed by utilizing maximal ratio combining (MRC), ML detection, C-MRC and LLR transmission methods. The performance analyses and the numerical results for cascaded Nakagami-m channels have shown that VN-LLR approach provides significant performance improvement with respect to the other considered techniques in DF cooperative vehicular systems with relay selection.

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Section: Introductionmentioning

confidence: 99%