Error analysis of the decode and forward protocol with selection combining

Selvaraj, M. D.; Mallik, Ranjan K.

doi:10.1109/twc.2009.080665

Cited by 54 publications

(25 citation statements)

References 11 publications

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“…For MPSK modulation with coherent detection, the conditional paired error probability of the nth hop is given by [6] where I(·, ·) is given by (34) in closed form. Substitution of (35) and (36) in (27) and (28) gives v n and A n in closed form, which, in turn, can be applied to (29) to conveniently compute the end-to-end SEP P ete .…”

Section: A Mpsk Modulation With Coherent Detectionmentioning

confidence: 99%

Performance Analysis of a Multi-Hop Communication System with Decode-and-Forward Relaying

Dhaka

Mallik

Schober

2011

2011 IEEE International Conference on Communications (ICC)

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This paper analyzes the performance of a multi-hop wireless communication system, consisting of a source node, N intermediate nodes or relays, and a destination node in a Rayleigh fading environment with decode-and-forward relaying at each intermediate node. The data is therefore transmitted from source to destination through N + 1 hops. Two types of modulation, namely, M -ary phase-shift keying (MPSK) and orthogonal M -ary frequency-shift keying (OMFSK), are considered for the transmitted data. In case of MPSK, each relay performs coherent detection, while in case of OMFSK, each relay performs noncoherent detection. Using a difference equation approach, analytical expressions for the end-toend symbol error probability are derived in both cases. We find that (1) although the performance degrades with increasing number of hops for fixed average signal-to-noise ratio per hop, the incremental degradation in performance with the addition of each extra hop decreases, (2) when each node transmits with fixed power, multi-hop transmission offers significant performance improvement over direct transmission. Keywords -Coherent and non-coherent detection, decode-and-forward (DF) relaying, M -ary phase-shift keying (MPSK), multi-hop communication, orthogonal M -ary frequency-shift keying (OMFSK), symbol error probability (SEP). I. IntroductionCooperation when considered in a multi-hop wireless communication scenario offers lower attenuation at distant points, that helps to extend the cell coverage area. It enables users to act as information sources as well as relays, thus increasing data rate [1] and system throughput, and decreasing sensitivity to channel variation [2].Multi-hop systems [3] have raised considerable attention recently as they avoid severe shadowing in long distance communication, or when the transmitted signal energy is relatively low. They also provide broader and cheaper coverage along with large spectral efficiency.Cooperation among users can be established by using the amplify-and-forward (AF) or the decode-and-forward

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Section: A Mpsk Modulation With Coherent Detectionmentioning

confidence: 99%

Performance Analysis of a Multi-Hop Communication System with Decode-and-Forward Relaying

Dhaka

Mallik

Schober

2011

2011 IEEE International Conference on Communications (ICC)

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“…To analyze the SEP for MPSK signaling, we use a paired error approach as in [5]. Consider the case when the MPSK symbol S k is transmitted over the source-to-ithrelay link and it is detected as the symbol S l at the ith relay, where l = 1 .…”

Section: Performance Analysismentioning

confidence: 99%

SEP of a scaled selection combining scheme with decode and forward relaying for MPSK signaling

Selvaraj¹,

Mallik

2010

2010 International Conference on Signal Processing and Communications (SPCOM)

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The performance analysis of a cooperative diversity system with decode and forward relaying has drawn considerable attention recently. The use of conventional maximal-ratio combiners does not suit well for a cooperative diversity scenario and the assumption of no detection errors at the relay is also practically hard to achieve. Hence, we propose a scaled selection combining scheme, where we scale the relay-todestination links by a deterministic positive scale factor to incorporate the effect of the source-torelay links. At the destination, we choose a link which has maximum scaled instantaneous signalto-noise ratio (SNR), from a set which consists of instantaneous SNR of the source-to-destination link and the scaled instantaneous SNRs of the relay-to-destination links. For a flat Rayleigh fading environment with statistically independent links, the end-to-end symbol error probability (SEP) of this scheme for M -ary phase-shift keying is derived in closed form. We also give a method of obtaining the optimum scale factor that minimizes the end-to-end SEP. The analysis is validated through extensive simulations.Keywords -Decode and forward (DF) protocol, Mary phase-shift keying (MPSK), Rayleigh fading, scaled selection combining, symbol error probability (SEP). I. IntroductionCooperative diversity is an effective technique to combat fading; hence the performance analysis of cooperative diversity systems is essential. The concept of cooperative diversity with decode and forward (DF) relaying has been introduced and studied in [1], [2]. DF relaying has drawn much attention recently because of its signal regenerating characteristics. Previous works [3], [4] on MRC based cooperative diversity systems assume that the relay forwards the source symbol only if it correctly detects that symbol; otherwise it does not forward. A serious drawback of this scheme is that the system will not see any diversity if the channel condition of the source-to-relay link is poor and also it misses a case that successive error occurs at the source-to-relay link and relay-to-destination link gives a

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“…Diversity technique used in wireless communication are selection combining, maximal ratio combining and equal gain combining. Error analysis of cooperative communication using selection combining for BPSK and MPSK is discussed in [4] & [5]. Error analysis of cooperative communication using maximal ratio combining is discussed in [6].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of cooperative systems using majority decision rule in Nakagami-m fading channel

Rajmohan¹,

Santhoshkumar

2015

2015 Applications and Innovations in Mobile Computing (AIMoC)

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In cooperative network, a single antenna user shares their antennas with other users to create space diversity, which is used to reduce the fading effect. Consider a cooperative network consist of a source, 'N' number of relays and a destination. There is a direct path exist between source and destination along with 'N' relaying diversity paths. It has 'L' diversity paths between source and destination. All paths are statistically independent and undergo Nakagami-m fading. At relays, we integrate decode and forward (DF) protocol. In our proposed system, we used majority decision rule (MDR) based decoding at the destination. In majority decision rule, the decoded symbol is based on a similar number of symbols received at the destination. We assumed that the cooperative system having 'N' even number of relays. So that we have 'L' odd independent diversity paths exist among source to destination. In this paper, we derived an end to end Symbol Error Probability (SEP) for Binary Phase Shift Keying (BPSK) using a majority decision rule in a closed form for multiple relay.Index Terms-Decode and forward (DF), Binary phase-shift keying (BPSK), Nakagami-m channel, Majority decision rule (MDR), Odd independent paths, symbol error probability (SEP).

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Error analysis of the decode and forward protocol with selection combining

Cited by 54 publications

References 11 publications

Performance Analysis of a Multi-Hop Communication System with Decode-and-Forward Relaying

Performance Analysis of a Multi-Hop Communication System with Decode-and-Forward Relaying

SEP of a scaled selection combining scheme with decode and forward relaying for MPSK signaling

Performance analysis of cooperative systems using majority decision rule in Nakagami-m fading channel

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