A Conic Quadratic Programming Approach to Physical Layer Multicasting for Large-Scale Antenna Arrays

Tran, Le-Nam; Hanif, Muhammad; Juntti, Markku

doi:10.1109/lsp.2013.2293840

Cited by 124 publications

(165 citation statements)

References 10 publications

Supporting

Mentioning

165

Contrasting

Order By: Relevance

“…However, we prove that they asymptotically converge to the optimal solution when the SINR threshold (Γ i ) and the modulation order (M ) tends to infinity. Towards this direction note that Algorithm 1 always provides equal or better bounds than the SOCP algorithm based on (25), while the solution from (38) provides a tighter LB than (35). Hence, it suffices to establish the result for (25) and (35), in order for it to hold true for Alg.…”

Section: B Asymptotic Optimalitymentioning

confidence: 99%

See 1 more Smart Citation

Exploiting Constructive Interference for Simultaneous Wireless Information and Power Transfer in Multiuser Downlink Systems

Timotheou

Zheng

Masouros

et al. 2016

IEEE J. Select. Areas Commun.

View full text Add to dashboard Cite

Section: B Asymptotic Optimalitymentioning

confidence: 99%

“…SLA is a widely used procedure in signal processing for communications that has been proven to converge to a local optimum [35]. Algorithm 1 starts from the solution of (25) and progressively improves so that its solution is at least as good as the one of (25).…”

mentioning

confidence: 99%

Exploiting Constructive Interference for Simultaneous Wireless Information and Power Transfer in Multiuser Downlink Systems

Timotheou

Zheng

Masouros

et al. 2016

IEEE J. Select. Areas Commun.

View full text Add to dashboard Cite

“…The FPP − SCA tool has been preferred over other existing approximations (for instance [13]) due to its guaranteed feasibility regardless of the initial state of the iterative optimization [12].…”

Section: B Successive Convex Approximationmentioning

confidence: 99%

Multicast multigroup beamforming for per-antenna power constrained large-scale arrays

Christopoulos

Chatzinotas

Ottersten

2015

2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

View full text Add to dashboard Cite

Abstract-Large in the number of transmit elements, multiantenna arrays with per-element limitations are in the focus of the present work. In this context, physical layer multigroup multicasting under per-antenna power constrains, is investigated herein. To address this complex optimization problem lowcomplexity alternatives to semi-definite relaxation are proposed. The goal is to optimize the per-antenna power constrained transmitter in a maximum fairness sense, which is formulated as a non-convex quadratically constrained quadratic problem. Therefore, the recently developed tool of feasible point pursuit and successive convex approximation is extended to account for practical per-antenna power constraints. Interestingly, the novel iterative method exhibits not only superior performance in terms of approaching the relaxed upper bound but also a significant complexity reduction, as the dimensions of the optimization variables increase. Consequently, multicast multigroup beamforming for large-scale array transmitters with per-antenna dedicated amplifiers is rendered computationally efficient and accurate. A preliminary performance evaluation in large-scale systems for which the semi-definite relaxation constantly yields non rank-1 solutions is presented.

show abstract

“…The proposed DC algorithm is proved to converge to a local optimum and it has been widely used in signal processing for communications [10].…”

Section: The Proposed DC Algorithmmentioning

confidence: 99%

Exploring green interference power for wireless information and energy transfer in the MISO downlink

Zheng

Masouros

Krikidis

et al. 2015

2015 IEEE International Conference on Communications (ICC)

View full text Add to dashboard Cite

Abstract-In this paper we propose a power-efficient transfer of information and energy, where we exploit the constructive part of wireless interference as a source of green useful signal power. Rather than suppressing interference as in conventional schemes, we take advantage of constructive interference among users, inherent in the downlink, as a source of both useful information and wireless energy. Specifically, we propose a new precoding design that minimizes the transmit power while guaranteeing the quality of service (QoS) and energy harvesting constraints for generic phase shift keying modulated signals. The QoS constraints are modified to accommodate constructive interference. We derive a sub-optimal solution and a local optimum solution to the precoding optimization problem. The proposed precoding reduces the transmit power compared to conventional schemes, by adapting the constraints to accommodate constructive interference as a source of useful signal power. Our simulation results show significant power savings with the proposed data-aided precoding compared to the conventional precoding.

show abstract

A Conic Quadratic Programming Approach to Physical Layer Multicasting for Large-Scale Antenna Arrays

Cited by 124 publications

References 10 publications

Exploiting Constructive Interference for Simultaneous Wireless Information and Power Transfer in Multiuser Downlink Systems

Exploiting Constructive Interference for Simultaneous Wireless Information and Power Transfer in Multiuser Downlink Systems

Multicast multigroup beamforming for per-antenna power constrained large-scale arrays

Exploring green interference power for wireless information and energy transfer in the MISO downlink

Contact Info

Product

Resources

About