Performance of Full CSI Selection Combining for Cooperative Diversity Systems

Cooperative diversity system improves the communication reliability and throughput in a multipath fading environment with the help of relay nodes. We consider a cooperative diversity system with a source (S), a decode and forward (DF) relay (R), and a selection combining (SC) enabled destination (D). In this paper, we derive the exact end-to-end symbol error probability (SEP) for M -ary phase-shift keying (MPSK) signaling using paired error approach and differential binary phase-shift keying (DBPSK) signaling over correlated, non-identical, slow, and flat Nakagami-m fading channels by assuming the correlation between SD-RD, SR-SD, and SR-RD fading channels. In addition, we perform the exact outage probability analysis for the same scenario. Further, we provide the asymptotic expressions for SEP and outage probability by removing the infinite series terms to investigate the diversity order. In a nutshell, the numerical results reveal that the SR-RD correlated channel scenario outperforms the uncorrelated channel scenario in terms of SEP. In addition, SEP performance degradation is observed in the case of other correlated channel scenarios compared to uncorrelated channel scenario. Moreover, marginal performance improvement in outage probability is observed at the low signal-to-noise ratio (SNR) regime of the SR-RD correlated channel scenario compared to the uncorrelated channel scenario. Finally, Monte Carlo simulations are performed to validate the theoretical results.Index Terms-Decode and forward (DF), differential binary phase-shift keying (DBPSK), M -ary phase-shift keying (MPSK), Nakagami-m fading, outage probability, paired error approach, symbol error probability (SEP).

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“…dϕ, (31) where γ(·, ·) indicates the lower incomplete gamma function [27, eq.(8.350-1)]. Let us define the function…”

Section: B Error Analysis Of Srd Link For Mpsk Using Paired Error Apmentioning

confidence: 99%

On the Error and Outage Performance of Decode-and-Forward Cooperative Selection Diversity System With Correlated Links

Swaminathan

Selvaraj

Roy

2015

IEEE Trans. Veh. Technol.

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“…Moreover, they demonstrated the significant improvement of the system performance which is a result of the distributed spatial diversity of the cooperative network. In [5] and [6], the authors consider a cooperative selection combining scheme and analyze the performance based on the assumption of independent and identically distributed (i.i.d.) fading channels.…”

Section: A Related Workmentioning

confidence: 99%

“…Reliability enhancement of the wireless link is achieved by diversity combining techniques (e.g., Selection combining (SC), Maximum Ratio Combining (MRC), Equal Gain Combining (EGC), and optimum combining (OC)) which are applied at the destination vehicle. SC is an important diversity technique which is widely used in wireless networks because of its simplicity and its acceptable performance [5]- [7]. The idea of SC is implemented by selecting the link with the maximum signal-to-noise ratio (SNR).…”

Section: Introductionmentioning

confidence: 99%

Error rate performance analysis of cooperative SCR in VANETs over generalized fading channels

Alkurd

Abualhaol

Muhaidat

2014

2014 IEEE Wireless Communications and Networking Conference (WCNC)

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Cooperative communication techniques are used in vehicular ad hoc networks (VANETs) to enhance system performance through distributed spatial diversity. In this paper, the average error rate performance of a VANET Cooperative SelectionCombining Receiver (CO-SCR) is analyzed over generalized statistically measured fading channels. Source-Destination and Source-Relay-Destination links are assumed to be independent but not necessary identically distributed. The Gaussian finite mixture is utilized to mathematically formulate an approximation for the probability density function (PDF) of the received signalto-noise ratio (SNR) at the output of CO-SCR at the destination vehicle. Then, the PDF of the SNR (SNR-PDF) expression is utilized to derive a closed-form expression for the approximated average error rate using different coherent modulation techniques. Monte-carlo simulation results are presented to validate the analysis.

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“…Substituting P e (x,z) using expression in (10) and solving the integrals in order of the random variables z, y and x respectively we get…”

Section: Sep Analyses For Mrcmentioning

confidence: 99%

“…In case of cooperative diversity analysed in [9], paired error approach is applied incorporating the effect of source-relay channel in arriving the exact SEP result which is different from the analysis of MIMO diversity. The benefit of full CSI in selection combining is presented in [10], but without comparing the SNR of source-relay channel and the SNR of relay-destination channel.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of adaptive maximal ratio/ selection combining based on full CSI and maximum flow constraint

Muthukumar¹,

Nagarajan²

2014

2014 International Conference on Communication and Signal Processing

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Cooperative diversity effectively mitigates the fading effect in wireless communication. The system with a source, a destination and the mUltiple relays is considered for performance analysis. The relay with best channel conditions perform the Decode and Forward (DF) relaying in distributed manner. Then the receiver combines the received signal with the full Channel State Information (CSI) using Maximum Ratio Combining (MRC) for the received instantaneous Signal to Noise Ratio (SNR) of source-relay channel greater than the SNR of relay-destination channel, otherwise Selection Combining (SC) is used to select the channel with maximum SNR. The end-to-end Symbol Error Probability (SEP) with DF relaying for QPSK symbol using proposed combining techniques is derived in closed form, the results shows proposed adaptive combining has better performance than the conventional cooperation scheme. IndexTerms-cooperative diversity, maximal ratio combining, decode and forward, selection combining, symbol error probability.

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Performance of Full CSI Selection Combining for Cooperative Diversity Systems

Cited by 21 publications

References 15 publications

On the Error and Outage Performance of Decode-and-Forward Cooperative Selection Diversity System With Correlated Links

On the Error and Outage Performance of Decode-and-Forward Cooperative Selection Diversity System With Correlated Links

Error rate performance analysis of cooperative SCR in VANETs over generalized fading channels

Performance analysis of adaptive maximal ratio/ selection combining based on full CSI and maximum flow constraint

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