A General Approach Toward Green Resource Allocation in Relay-Assisted Multiuser Communication Networks

Singh, Keshav; Gupta, Ankit; Ratnarajah, Tharmalingam; Ku, Meng‐Lin

doi:10.1109/twc.2017.2772229

Cited by 35 publications

(33 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This work studies a two-hop cooperative relay network, comprising one source S, two destinations D 1 and D 2 and a cluster C with K decode-and-forward (DF) relays R k ∈ C (1 ≤ k ≤ K). DF avoids the detrimental effect of noise amplification by the relays, at the cost of higher implementation complexity, compared to amplify-and-forward relays, as it has been shown in various works on cooperative relaying in multi-user networks [36,37]. At the same time, relays are clustered in such a way, so that communication among them can be reliably established in order to ensure error-free signaling and coordination.…”

Section: System Modelmentioning

confidence: 99%

Full-Duplex NOMA Transmission with Single-Antenna Buffer-Aided Relays

et al. 2019

View full text Add to dashboard Cite

The efficient deployment of fifth generation and beyond networks relies upon the seamless combination of recently introduced transmission techniques. Furthermore, as multiple network nodes exist in dense wireless topologies, low-complexity implementation should be promoted. In this work, several wireless communication techniques are considered for improving the sum-rate performance of cooperative relaying non-orthogonal multiple access (NOMA) networks. For this purpose, an opportunistic relay selection algorithm is developed, employing single-antenna relays to achieve full-duplex operation by adopting the successive relaying technique. In addition, as relays are equipped with buffers, flexible half-duplex transmission can be performed when packets reside in the buffers. The proposed buffer-aided and successive single-antenna (BASSA-NOMA) algorithm is presented in detail and its operation and practical implementation aspects are thoroughly analyzed. Comparisons with other relevant algorithms illustrate significant performance gains when BASSA-NOMA is employed without incurring high implementation complexity.

show abstract

Section: System Modelmentioning

confidence: 99%

Full-Duplex NOMA Transmission with Single-Antenna Buffer-Aided Relays

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The resource allocation problem in a relay-aided OFDMA PLC system usually involves a mixed integer nonlinear programming (MINLP) problem [28,29], which leads to an algorithmic complexity of an order of magnitude. The subcarriers and power are jointly optimized, which makes it difficult to obtain an optimal resource allocation strategy.…”

Section: Multi-user Resource Allocationmentioning

confidence: 99%

Resource Allocation for Relay-Based OFDMA Power Line Communication System

Zhu

Chen

He³

2019

Electronics

View full text Add to dashboard Cite

In this paper, we investigate the resource allocation for multi-user orthogonal frequency division multiple access (OFDMA) power line communication (PLC) systems, which satisfy both the total average transmit power constrained by PLC networks and the required interference limitations. First, we propose an optimal resource allocation scheme, with respect to joint consideration of the subcarrier and power constraint to maximize the throughput of the PLC system. Then, we divide the intractable problem into two individual subproblems to decrease the computational burden, which can avoid proceeding the mixed integer nonlinear programming (MINLP) problem. The proposed resource allocation scheme can ensure the optimality and efficiency of the system with rigorous proofs. The simulation results show that our proposed resource allocation scheme for the PLC system outperforms other algorithms, and is efficient with acceptable complexity.

show abstract

“…The total transmission power dedicated for the entire network is denoted as P , and it is evenly divided between the two transmission phases . Uneven power allocation is out of the scope of this paper (see the works of Singh et al). Suppose that each user is equipped with J a transmit antennas, the relay is equipped with R a antennas, and the destination is equipped with M receive antennas, then this configuration is described afterward by

false(J_{a}^{J}, R_{a}, M false)

.…”

Section: The Proposed Protocolsmentioning

confidence: 99%

Low‐complexity and full‐diversity parallel interference cancellation for multiuser wireless relaying networks

Astal¹,

Ismail

Alouini

et al. 2019

Trans Emerging Tel Tech

View full text Add to dashboard Cite

In this paper, the multiuser interference of wireless relaying networks (WRNs) is considered. Two transmission protocols with an interference cancellation scheme are proposed, namely, the concurrentS − R−D‐PICR,D protocol for decode‐and‐forward WRNs and the concurrentS − R − D‐PICD protocol for amplify‐and‐forward WRNs. Unlike the existing protocols, these protocols allow the concurrent transmission in both phases of the transmission, and hence, higher spectral efficiency is offered while maintaining low decoding complexity. The concurrentS − R − D‐PICR,D protocol achieves interference‐free diversity without imposing any condition on the node's antenna number. However and similar to most existing protocols, this protocol requires the channel state information (CSI) of the users‐relay links at the relay. In contrast, the concurrentS − R − D‐PICD protocol achieves a better diversity order, given that the relay's antenna >8, whereas CSI is required only at the destination. Although the diversity's upper bound is not achieved, this protocol uses a simple relay as no CSI or encoding is required at the relay. In addition and unlike the existing protocols, the achievable diversity is determined by both the user's and the destination's antennas, and it is not sacrificed while the number of users is increased. This paper also establishes sufficient conditions for a space‐time block code to achieve the mentioned diversity gain of the proposed protocols.

show abstract

A General Approach Toward Green Resource Allocation in Relay-Assisted Multiuser Communication Networks

Cited by 35 publications

References 27 publications

Full-Duplex NOMA Transmission with Single-Antenna Buffer-Aided Relays

Full-Duplex NOMA Transmission with Single-Antenna Buffer-Aided Relays

Resource Allocation for Relay-Based OFDMA Power Line Communication System

Low‐complexity and full‐diversity parallel interference cancellation for multiuser wireless relaying networks

Contact Info

Product

Resources

About