Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Zheng, Gan

doi:10.1109/tsp.2014.2376885

Cited by 157 publications

(102 citation statements)

References 34 publications

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“…(3.471.9)], which upon substituting I 1 into (45), results in (25), this finishes the proof. 11 Alternatively, one could choose w T as w T = (27), that finishes the proof.…”

Section: Appendix C Proof Of Propositionmentioning

confidence: 87%

Hop-by-Hop ZF Beamforming for MIMO Full-Duplex Relaying With Co-Channel Interference

Almradi

Xiao

Hamdi

2018

IEEE Trans. Commun.

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Abstract-In this paper, a comprehensive design and analysis of multiple-input multiple-output (MIMO) full-duplex (FD) relaying systems in a multi-cell environment are investigated, where a multi-antenna amplify-and-forward (AF) FD relay station serves multiple half-duplex (HD) multi-antenna users. The pivotal obstacles of loopback self-interference (LI) and multiple co-channel interferers (CCI) at the relay and destination when employing FD relaying in cellular networks are addressed. In contrast to the HD relaying mode, the CCI in the FD relaying mode is predicted to double since the uplink and downlink communications are simultaneously scheduled via the same channel. In this paper, the optimal layout of transmit (receive) precoding (decoding) weight vectors which maximizes the overall signal-to-interefernce-plusnoise ratio (SINR) is constructed by a suitable optimization problem, then a closed-form sub-optimal formula based on null space projection is presented. The proposed hop-by-hop rank-1 zero-forcing (ZF) beamforming vectors are based on added ZF constraints used to suppress the LI and CCI channels at the relay and destination, i.e., the source and relay perform transmit ZF beamforming, while the relay and destination employ receive ZF combining. To this end, unified accurate expressions for the outage probability and ergodic capacity are derived in closed-form. In addition, simpler tight lower-bound formulas for the outage probability and ergodic capacity are presented. Moreover, the asymptotic approximations for outage probability is considered to gain insights into system behavior in terms of the diversity order and array gain. Numerical and simulation results show the accuracy of the presented exact analytical expressions and the tightness of the lower-bound expressions. The case of hopby-hop maximum-ratio transmission/maximal-ratio combining beamforming is included for comparison purposes. Furthermore, our results show that while multi-antenna terminals improve the system performance, the detrimental effect of CCI on FD relaying is clearly seen. Therefore, our findings unveil that MIMO FD relaying could significantly improve the system performance compared to its conventional MIMO HD relaying counterpart.Index Terms-MIMO relaying, full-duplex relaying, halfduplex relaying, beamforming, zero-forcing (ZF), outage probability, ergodic capacity, co-channel interference.

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“…(3.471.9)], which upon substituting I 1 into (45), results in (25), this finishes the proof. 11 Alternatively, one could choose w T as w T = (27), that finishes the proof.…”

Section: Appendix C Proof Of Propositionmentioning

confidence: 87%

Hop-by-Hop ZF Beamforming for MIMO Full-Duplex Relaying With Co-Channel Interference

Almradi

Xiao

Hamdi

2018

IEEE Trans. Commun.

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“…Our idea is to optimize a portion of variables when the others are fixed and then search all the potential results to produce the optimal solution [16], [17]. More specifically, in the first step, we try to find the solutions of W and Q x for fixed P 1 , P 2 and ρ values.…”

Section: Iterative Optimization Algorithmmentioning

confidence: 99%

Power control and beamforming design for SWIPT in AF two-way relay networks

Wang

Mehrpouyan

et al. 2016

2016 IEEE International Conference on Communication Systems (ICCS)

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Abstract-In this paper, we study the problem of joint power control and beamforming design for simultaneous wireless information and power transfer (SWIPT) in an amplify-and-forward (AF) based two-way relaying (TWR) network. The considered system model consists of two source nodes and a relay node. Two single-antenna source nodes receive information and energy simultaneously via power splitting (PS) from the signals sent by a multi-antenna relay node. Our objective is to maximize the weighted sum power at the two source nodes subject to quality of service (QoS) constraints and the transmit power constraints. However, the joint optimization of the relay beamforming matrix, the source transmit power and PS ratio is intractable. To find a closed-form solution of the formulated problem, we decouple the primal problem into two subproblems. In the first problem, we intend to optimize the beamforming vectors for given transmit powers and PS ratio. In the second subproblem, we optimize the remaining parameters with obtained beamformers. It is worth noting that although the corresponding subproblem are nonconvex, the optimal solution of each subproblem can be found by using certain techniques. The iterative optimization algorithm finally converges. Simulation results verify the effectiveness of the proposed joint design. I. INTRODUCTION Simultaneous wireless information and power transfer (SWIPT) is a promising energy harvesting (EH) techniqueto prolong the operational time of energy-constrained nodes in wireless networks [1], [2]. Recently, SWIPT has been investigated for various wireless channels, e.g., the point-topoint additive white Gaussian noise (AWGN) channel [3], the frequency selective channels [4], the fading AWGN channel [5], the multiple-input-multiple-output (MIMO) channel [6], and the multiple-input-single-output (MISO) broadcast channel [7].Besides the above studies related to one-hop transmission, the SWIPT technique has also been extended to wireless relay networks [8]- [14]. For the one-way single-antenna relay channel, two protocols, namely time switching (TS) and power splitting (PS), are proposed for amplify-and-forward (AF) relay networks in [8], [9]. Later on, SWIPT was extended to a full-duplex wireless-powered one-way relay channel in [10], [11], where the data and energy queues of the relay are updated simultaneously in every time slot. However, compared with the one-way relaying (OWR), two-way relaying (TWR) can further improve system spectral efficiency, the SWIPT protocols for TWR channel recently have attracted much attention. In [12], the authors provided a SWIPT protocol in two-way AF relaying channels, where two sources exchange

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“…For simplicity, we follow [27] and assume that the full channel state information is known perfectly at the relay. Without loss of generality, we hereafter consider a normalized time duration of each transmission block, i.e., T = 1.…”

Section: Relaymentioning

confidence: 99%

“…It is observed that the receive beamforming vector w r is only involved in the terms which has the same form as function (33) in [27], and can be solved similarly through D-C programming [26] to find an optimal solution. Specifically, we can express F (W t ) as a difference of two concave functions f (W t ) and g (W t ), i.e., We then approximate g (W t ) by a linear function.…”

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confidence: 99%

Wireless-Powered Communication Networks

Niyato¹,

Hossain²,

Kim³

et al. 2016

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Learn the fundamentals of architecture design, protocol optimization, and application development for wireless-powered communication networks with this authoritative guide. Readers will gain a detailed understanding of the issues surrounding architecture and protocol design, with key topics covered including relay-based energy harvesting systems, multiple-antenna systems for simultaneous wireless information and power transfer (SWIPT), performance modeling and analysis, and ambient wireless energy harvesting based cellular systems. Current applications of energy harvesting and transfer in different wireless networking scenarios are discussed, aiding the understanding of practical system development and implementation issues from an engineering perspective. The first book to provide a unified view of energy harvesting and wireless power transfer networks from a communications perspective, this is an essential text for researchers working on wireless communication networks and wireless systems, RF engineers, and wireless application developers.

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Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Cited by 157 publications

References 34 publications

Hop-by-Hop ZF Beamforming for MIMO Full-Duplex Relaying With Co-Channel Interference

Hop-by-Hop ZF Beamforming for MIMO Full-Duplex Relaying With Co-Channel Interference

Power control and beamforming design for SWIPT in AF two-way relay networks

Wireless-Powered Communication Networks

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