Semi-Distributed Relay Selection and Power Allocation for Outage Minimization in Cooperative Relaying Networks

Liu, Lingya; Hua, Cunqing; Chen, Cailian; Guan, Xinping

doi:10.1109/tvt.2016.2547179

Cited by 12 publications

(16 citation statements)

References 26 publications

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“…The idea is to find the optimal value of γ, i.e., γ opt , we do not need to calculate the optimum vector w. To do so, we start from an initial interval (γ low 0 , γ up 0 ) of γ opt where γ up 0 is the initial upper bound of γ opt , which is derived in (26) and γ low 0 is the initial lower bound of γ opt , which is zero. Then, at step n, by choosing γ = 1 2 (γ low n−1 + γ up n−1 ) and checking the feasibility of problem (27), the solution interval of γ opt will be updated as:…”

Section: B Optimal Sinr Solutionmentioning

confidence: 99%

See 1 more Smart Citation

Optimal Relaying Beamforming in Multiple Access Broadcast Channel (MABC) Bidirectional Cognitive Radio Networks in Presence of Interferers

Zaeri-Amirani

Afghah

Ashdown

2018

Int J Wireless Inf Networks

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In this paper, a general cognitive radio system consisting of a set of users with different level of spectrum access including two primary transceivers and several types of secondary users is considered.It is assumed that two secondary users operate based on an underlay model at the same frequency bandwidth and at the same time as the primary users based on a multiple access broadcast channel (MABC) bidirectional beamforming scheme. Other secondary users provide a relaying service to the primary users in exchange for the opportunity to send their messages towards their own destinations for a fixed portion of the communication cycle. In addition, it is assumed that some interferers are active during the communication cycle and cause interference for the network. Furthermore, it is assumed that only partial channel state information (CSI) between interferers and other nodes in the network is available.We provide a robust optimization method against imperfection on the interferers' CSI to maximize the joint primary and secondary signal-to-interference-plus-noise-ratio (SINR) with the assumption of limited available power at the secondary relays. An amplify-and-forward (AF) relaying scheme is deployed at the secondary relays and the optimal beamforming is obtained using second order convex programming (SOCP) method. The simulation results show the performance of the proposed beamforming method arXiv:1809.02274v1 [cs.IT]

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Section: B Optimal Sinr Solutionmentioning

confidence: 99%

“…It is worth mentioning that the bisection method increases the complexity order of our method by a factor of log 2 γ up . In order to solve the feasibility check problem (27), we rearrange the constraints in a quadratic format:…”

Section: B Optimal Sinr Solutionmentioning

confidence: 99%

Optimal Relaying Beamforming in Multiple Access Broadcast Channel (MABC) Bidirectional Cognitive Radio Networks in Presence of Interferers

Zaeri-Amirani

Afghah

Ashdown

2018

Int J Wireless Inf Networks

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“…According to (5), with coding rate r the achievable error probability of the link from the source to R j is given by ε S,j = P(γ S,j , r, m). In other words, with probability 1 − ε S,j R j will decode the data block correctly.…”

Section: A Achievable Fbl Throughput On Static Channelsmentioning

confidence: 99%

“…Cooperative relaying significantly promotes the transmission performance and greatly capitalizes on dense node packings [1], [2], [3]. Consequently, the performance in multi-node networks may be leveraged by applying relaying, as each node may potentially act as a relay, e.g., via best single relay (BSR) selection, assisting transmissions for peer nodes [4], [5], [6]. However, the above studies of relaying and the application of relaying in multi-node scenarios are under the ideal assumption of communicating arbitrarily reliable at rates close to Shannon's channel capacity.…”

Section: Introductionmentioning

confidence: 99%

Finite blocklength performance of a multi-relay network with best single relay selection

Schnelling

Amraue

et al. 2017

2017 International Symposium on Wireless Communication Systems (ISWCS)

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Abstract-We consider a multi-relay system where the best single relay is selected to assist transmissions. We study the performance bound of the system in the finite blocklength regime. On the one hand, we extend Polyanskiy's finite blocklength model of a single-hop scenario to the considered relaying system and derive the corresponding achievable throughput. On the other hand, by employing a practical coding scheme, namely polar codes, a finite blocklength performance bound attainable by a low-complexity coding scheme is provided. Through simulation and numerical investigations, we show the appropriateness of the proposed bounds. Moreover, we evaluate both the achievable performance with finite blocklengths and the performance of polar codes in the best single relay scenario in comparison to direct transmission.Index Terms-best single relay, decode-and-forward, finite blocklength regime, relaying, polar codes.

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“…However, the more relay nodes are used, the more total energies of networks may be consumed in cooperative transmission. Thus, some works focused on the performance analysis and investigation of cooperative transmission, such as capacity, bit error rate, and outage probability of system . The paper proposed a cooperative relay selection scheme to simultaneously reduce the outage probability and increase the energy efficiency by using cooperative hybrid automatic retransmission request.…”

Section: Introductionmentioning

confidence: 99%

The computation and analysis of energy‐efficient multirelay and multihop communication scheme in wireless sensor networks

Xie

Shen

et al. 2017

Int J Communication

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Wireless sensor network (WSN) has been one of the most important network technologies nowadays. However, the communication of wireless sensor nodes is often constrained by computation capability and energy efficiency, and direct transmission is hard to adapt to all communication environments. Cooperative transmission can achieve the low energy consumption requirements effectively. But most researches considered multirelay and singular-hop scheme, and their energy efficiencies were not satisfactory in a longer transmission distance. To address this problem, we investigate the effect of the relay links and the relay node hops on the energy consumption in this paper. By deriving the outage probability of the multirelay and multihop transmission scheme, the minimum transmitting power of the source node is obtained. Then the existence of the minimum energy consumption is proved with respect to the number of relay links. Simultaneously, to reduce the computational complexity to ensure the effective implementation of the communication, the optimal number of relay links is calculated based on the minimum energy consumption. The simulation results show that the proposed multirelay and multihop transmission scheme has better transmission efficiency and can achieve satisfactory performance of communication and computation cooperation. KEYWORDScooperative transmission, energy consumption, multirelay and multihop, the optimal number of relay links, wireless sensor networks (WSNs)

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Semi-Distributed Relay Selection and Power Allocation for Outage Minimization in Cooperative Relaying Networks

Cited by 12 publications

References 26 publications

Optimal Relaying Beamforming in Multiple Access Broadcast Channel (MABC) Bidirectional Cognitive Radio Networks in Presence of Interferers

Optimal Relaying Beamforming in Multiple Access Broadcast Channel (MABC) Bidirectional Cognitive Radio Networks in Presence of Interferers

Finite blocklength performance of a multi-relay network with best single relay selection

The computation and analysis of energy‐efficient multirelay and multihop communication scheme in wireless sensor networks

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