Joint Relay Selection and Power Allocation for Full-Duplex DF Co-Operative Networks With Outdated CSI

Su, Yinjie; Jiang, Lingge; He, Chen

doi:10.1109/lcomm.2016.2520944

Cited by 20 publications

(13 citation statements)

References 15 publications

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“…Outage probability and asymptotic analysis of several RS schemes which are based on the available channel state information (CSI) are derived in [10]. A joint RS and power allocation with outdated CSI is analyzed in [11]. Outage probability, average symbol error rate, and ergodic capacity are derived for a joint relay and transmit/receive antenna mode selection scheme in [12].…”

Section: A Related Workmentioning

confidence: 99%

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Multi-User Relay Selection for Full-Duplex Radio

Atapattu

Dharmawansa

Renzo

et al. 2019

IEEE Trans. Commun.

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This paper investigates a user-fairness relay selection (RS) problem for decode-and-forward (DF) full-duplex (FD) relay networks where multiple users cooperate with multiple relays in each coherence time. We consider two residual self-interference (RSI) models with or without direct links. We propose a suboptimal relay selection (SRS) scheme which requires only the instantaneous channel state information (CSI) of source-to-relay and relay-to-destination links. To evaluate performance, the outage probability of SRS is derived for different scenarios depending on RSI models and the availability of direct links. To further investigate, asymptotic expressions are derived for the high transmit power regime. For comparison purposes, i) the average throughputs of FD and half-duplex (HD) modes are derived; ii) non-orthogonal transmission is considered and its performance is discussed with approximations; and iii) the impact of imperfect CSI is investigated with the aid of analysis. While simulation results are provided to verify the analytical results, they reveal interesting fundamental trends. It turns out that a significant throughput degradation occurs with FD mode over HD mode when self-interference is fully proportional to the transmit power. Since all users can communicate in the same coherence time with FD mode, these joint RS schemes are useful for user-fairness low-latency applications.

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Section: A Related Workmentioning

confidence: 99%

“…In FD relay studies [10], [11], it is commonly assumed that no direct source-destination link exists because the direct link is sufficiently weak due to obstacles and/or deep fading. In HD relaying, however, a direct link is a great advantage as the destination receives two copies of the same signal.…”

Section: B Problem Statementmentioning

confidence: 99%

Multi-User Relay Selection for Full-Duplex Radio

Atapattu

Dharmawansa

Renzo

et al. 2019

IEEE Trans. Commun.

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“…This distance normalization is done with respect to the distance between PT and PR, i.e., d 1 = 1. It is worth noting that the self-interference can be mitigated and its residual part also can be considered as following circularly symmetric complex Gaussian distribution (see [17,18,21,23] and references therein). So, the self-interference channel coefficient from the transmitting antenna to the receiving antenna of ST can be modeled as h q $ CNð0; d −v1 q Þ, where d q is the distance between transmitting and receiving antennas of ST and v 1 is the path loss exponent of the self-interference channel.…”

Section: System Modelmentioning

confidence: 99%

“…For example, multi-objective optimization for powerefficient and secure FD communication systems was studied in [15], while joint user selection and power allocation in FD multicell networks was investigated in [16]. Considering different system models with FD relays, authors in [17][18][19] discussed power allocation and energy efficiency. In addition, a new device-to-device (D2D) communication scheme was proposed which allowed D2D links to underlay the cellular downlink by assigning D2D transmitters as FD relays to assist the cellular downlink transmission [20].…”

Section: Introductionmentioning

confidence: 99%

Opportunistic half-duplex/full-duplex relaying mode selection criterion in cognitive relay networks

Cheng

Chen

Zhao

2018

J Wireless Com Network

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In this paper, adaptive transmission in a cognitive relay network where a secondary transmitter acts as cooperative relay for a primary transmitter while in return gets the opportunity to send its own data is considered. An opportunistic half-duplex (HD)/full-duplex (FD) relaying mode selection criterion which can utilize the advantages of both HD and FD is proposed. The key idea is that the cooperative relay switches between the HD mode and the FD mode according to the residual self-interference power. When the residual self-interference power is lower than a preset threshold, the FD mode is selected to get a high throughput; otherwise, the HD mode is selected to avoid the effect of self-interference. The target is to maximize the throughput of secondary system under the interference constraint of primary system and transmission power constraints. As it is difficult to solve this optimization problem directly, an alternate optimization method is used to solve it, which optimizes amplification gains in HD and FD modes in turn until convergence. Simulation results show that the proposed opportunistic mode selection criterion can select an appropriate relaying mode to achieve a higher throughput than either the FD mode or the HD mode under different residual self-interference power regimes.

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“…In the work of Do et al, joint relay selection and power allocation for two‐way relaying with physical layer network coding are discussed. A relay selection and power allocation scheme for decode‐and‐forward (DF) cooperative networks was discussed in the works of Ke et al and Su et al In the work of Ahmed et al, relay subset selection scheme for best relay selection and partial relay selection is proposed. Jing et al consider the problem of cooperative relay selection, in which the PUs actively select appropriate SUs as relay nodes to enhance their transmission performance.…”

Section: Introductionmentioning

confidence: 99%

A nonorthogonal cooperative scheme for multiuser CRN using probabilistic interference constraint

Ahmed

Ali

Naeem

et al. 2019

Trans Emerging Tel Tech

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The predicted exponential increase in data traffic for future 5G networks demands for increased wireless spectrum capacity. The unlicensed spectrum bands are overburdened, whereas the licensed spectrum bands are underutilized. Cognitive radio systems (CRSs) can solve the problem of spectrum scarcity by allowing the reuse of the underutilized licensed spectrum bands. However, efficient resource allocation schemes in CRS are inevitable before we can reap the benefits of CRS. In this article, we have formulated an optimization problem for multiuser cooperative CRS, which considers relay selection and power allocation to maximize the sum capacity of the system. The optimization problem is a mixed‐integer nonlinear program, and deriving its optimal solution is extremely difficult. Therefore, we propose an iterative joint multiple relay selection and power allocation (IJRSPA) algorithm for multiuser CRSs. The proposed IJRSPA has low computational complexity, and simulation results verify its effectiveness.

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Joint Relay Selection and Power Allocation for Full-Duplex DF Co-Operative Networks With Outdated CSI

Cited by 20 publications

References 15 publications

Multi-User Relay Selection for Full-Duplex Radio

Multi-User Relay Selection for Full-Duplex Radio

Opportunistic half-duplex/full-duplex relaying mode selection criterion in cognitive relay networks

A nonorthogonal cooperative scheme for multiuser CRN using probabilistic interference constraint

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