Generalized Analysis of Dual-Hop DF Opportunistic Relaying with Randomly Distributed Relays

Behnad, Aydin; Rabiei, Amir Masoud; Beaulieu, N.C.; Hajizadeh, Hamid

doi:10.1109/lcomm.2013.050313.122500

Cited by 20 publications

(23 citation statements)

References 13 publications

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“…This implies that the OP is independent of the number of available relays N and of their spatial locations. The relays may, for example, be randomly deployed without affecting the OP [18]. If L ≥ M , on the other hand, the asymptotic OP depends on N , on the network topology, and on the spatial locations of the relays.…”

Section: B Asymptotic Outage Probability Of Mrsmentioning

confidence: 99%

On the Diversity of Network-Coded Cooperation With Decode-and-Forward Relay Selection

Duhamel

Renzo

2015

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we study outage probability (OP) and diversity order of a M -source and N -relay wireless network that combines network coding (NC) and relay selection (RS). More specifically, a decode-and-forward (DF) relaying protocol is considered and the network-encoding vectors at the relays are assumed to constitute a maximum distance separable (MDS) code. Single relay selection (SRS) and multiple relay selection (MRS) protocols are investigated, where the best relay and the L best relays forward the network-coded packets to the destination, respectively. An accurate mathematical framework for computing the OP is provided and from its direct inspection the following conclusions on the achievable diversity are drawn: 1) the SRS protocol achieves diversity order equal to two regardless of M and N and 2) the MRS protocol achieves diversity order equal to L + 1 if L < M and equal to N + 1 if L ≥ M . These analytical findings are substantiated with the aid of Monte Carlo simulations, which also show that RS provides a better OP than NC based on repetition coding if L ≥ M .Index Terms-Network coding, cooperative networks, relay selection, outage probability, diversity order.

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Section: B Asymptotic Outage Probability Of Mrsmentioning

confidence: 99%

On the Diversity of Network-Coded Cooperation With Decode-and-Forward Relay Selection

Duhamel

Renzo

2015

IEEE Trans. Wireless Commun.

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“…Via modeling the relay locations by a homogeneous PPP, the outage probabilities of both opportunistic relaying and selection cooperation are analyzed for Rayleigh fading channels in [16]. The performance analysis is extended for general fading channels in [17]. An uncoordinated cooperation scheme is proposed in [18], where each relay contends to cooperate with a specific probability calculated based on both local channel state information (CSI) and spatial distribution of relays.…”

Section: Related Workmentioning

confidence: 99%

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

Zhou

Zhuang

2015

IEEE Trans. Wireless Commun.

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Abstract-In this paper, we investigate the network throughput achieved by both spatial diversity and spatial frequency reuse in a wireless ad hoc network with randomly positioned single-hop source-destination pairs and relays. Compared to conventional direct transmissions, cooperative communication can enhance single-link transmission reliability, but reduce network-wide spatial frequency reuse due to relay transmissions. To study the tradeoff between these two competing effects, we construct a geographically constrained region for relay selection based on channel state information. The network throughput, defined as the product of the success probability of each link and the expected number of concurrent transmissions, is derived as a function of the total number of links, relay density, size of relay selection region, and distance between the source and destination. The performance analysis is carried out for both selection combining and maximum ratio combining at the destination. Such analytical results can evaluate the effectiveness of cooperative communication and provide useful insights on the design of largescale networks. Finally, extensive simulations are conducted to validate the performance analysis.

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“…To this end, we use the same approached adopted in [10], [12], [15] . Using (11) and the fact that conditioning to the location of the relays, {P j } is a set of independent random variables, the CDF of the total transmission power can be written as…”

Section: System Modelmentioning

confidence: 99%

“…2 has been previously addressed in [10], [12], [15] to study the performance of dual-hop AF and DF relay systems. In this coordinate system, given the poles Sand D with distance f sd , every point R (except for the point located on the S-D crossing line), can be uniquely represented by the biangular coordinated (Os, Od), where -Jr < Os, Od < Jr.…”

Section: System Modelmentioning

confidence: 99%

Performance analysis of decode-and-forward dual-hop opportunistic relaying with power control

Gao

Behnad

Wang

2014

2014 IEEE International Conference on Communications (ICC)

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Although cooperative relaying is generally considered as an attractive technique to improve system performances, the additional power consumption of a relaying link becomes a consistent concern. In order to characterize the power consumption of the dual-hop opportunistic relaying with power control, an exact expression for the cumulative distribution function of the total required transmission power is derived in this paper. Our analysis is based on the scenario that the best relay is selected among a set of decode-and-forward relays with homogeneous spatial Poisson distribution, such that the source-plus-relay power consumption is minimized. The required transmission power is evaluated by including the randomness of both path loss related to the locations of relays and the channel fading caused by multipath propagation. The analytical solution is verified by computer simulations and is used to compare the required power of relaying and direct links under different channel conditions. The results show that the dual-hop relaying is advantageous in long-term power saving by requiring a bounded average transmission power, while the power for the direct link communication is unbounded in some fading environments. Moreover, the required transmission power for the opportunistic relaying is less than that of the direct link with a reasonable relay density, therefore the cooperative communications can provide the power efficient transmission when the relay network is not sparse.

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Generalized Analysis of Dual-Hop DF Opportunistic Relaying with Randomly Distributed Relays

Cited by 20 publications

References 13 publications

On the Diversity of Network-Coded Cooperation With Decode-and-Forward Relay Selection

On the Diversity of Network-Coded Cooperation With Decode-and-Forward Relay Selection

Throughput Analysis of Cooperative Communication in Wireless <italic>Ad Hoc</italic> Networks With Frequency Reuse

Performance analysis of decode-and-forward dual-hop opportunistic relaying with power control

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