Performance analysis of in-band collision detection for dense wireless networks

AbstractWith the massive growth of wireless networks comes a bigger impact of collisions and interference, which has a negative effect on throughput and energy efficiency. To deal with this problem, we propose an in-band wireless collision and interference detection scheme based on full-duplex technology. To study its performance, we compare its throughput and energy efficiency with the performance of traditional half-duplex and symmetric in-band full-duplex transmissions. Our analysis considers a realistic protocol and overhead modeling, and a measurement-based self-interference model. Our results indicate that our proposed collision detection scheme can provide significant gains in terms of throughput and energy efficiency in large wireless networks. Moreover, when compared to half-duplex and symmetric full-duplex, our analysis shows that this scheme allows up to 45% more nodes in the network for the same energy consumption per bit. These results suggest that this could be an enabling technology towards efficient, dense wireless networks.

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Full-Duplex or Half-Duplex: A Bayesian Game for Wireless Networks with Heterogeneous Self-Interference Cancellation Capabilities

IEEE Transactions on Mobile Computing ◽

10.1109/tmc.2017.2758785 ◽

2018 ◽

Vol 17 (5) ◽

pp. 1076-1089 ◽

Cited By ~ 9

Author(s):

Wessam Afifi ◽

Mohammad J. Abdel-Rahman ◽

Marwan Krunz ◽

Allen B. MacKenzie

Keyword(s):

Wireless Networks ◽

Interference Cancellation ◽

Full Duplex ◽

Bayesian Game ◽

Half Duplex

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Energy Efficiency Maximization of Full-Duplex and Half-Duplex D2D Communications Underlaying Cellular Networks

Mobile Information Systems ◽

10.1155/2016/2748673 ◽

2016 ◽

Vol 2016 ◽

pp. 1-15 ◽

Cited By ~ 4

Author(s):

Yiliang Chang ◽

Hongbin Chen ◽

Feng Zhao

Keyword(s):

Energy Efficiency ◽

Cellular Networks ◽

Optimization Problem ◽

Optimization Method ◽

Full Duplex ◽

Noncooperative Game ◽

D2d Communications ◽

Half Duplex ◽

Game Theoretic ◽

Lower Complexity

Earlier works have studied the energy efficiency (EE) of half-duplex Device-to-Device (D2D) communications. However, the EE of full-duplex D2D communications underlaying cellular networks which undergoes residual self-interference (SI) has not been investigated. In this paper, we focus on the EE of full-duplex D2D communications with uplink channel reuse and compare it with the half-duplex counterpart, aiming to show which mode is more energy-efficient. Our goal is to find the optimal transmission powers to maximize the system EE while guaranteeing required signal-to-interference-plus-noise ratios (SINRs) and transmission power constraints. The optimal power allocation problem is modeled as a noncooperative game, in which each user equipment (UE) is self-interested and wants to maximize its own EE. An optimal iterative bisection-alternate optimization method is proposed to solve the optimization problem from the noncooperative game-theoretic perspective. Simulation results show that the proposed method can achieve EE close to that obtained by an existing method but with lower complexity in half-duplex D2D communications underlaying cellular networks. Moreover, the full-duplex D2D communications underlaying cellular networks outperform the half-duplex D2D communications underlaying cellular networks in terms of EE when effective SI mitigation techniques are applied.

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Adaptive Spectrum Sharing for Half-Duplex and Full-Duplex Cognitive Radios: From the Energy Efficiency Perspective

IEEE Transactions on Communications ◽

10.1109/tcomm.2018.2843768 ◽

2018 ◽

Vol 66 (11) ◽

pp. 5067-5080 ◽

Cited By ~ 7

Author(s):

Dongming Li ◽

Julian Cheng ◽

Victor C. M. Leung

Keyword(s):

Energy Efficiency ◽

Spectrum Sharing ◽

Cognitive Radios ◽

Full Duplex ◽

Half Duplex

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HD/FD and DF/AF with Fixed-Gain or Variable-Gain Protocol Switching Mechanism over Cooperative NOMA for Green-Wireless Networks

Sensors ◽

10.3390/s19081845 ◽

2019 ◽

Vol 19 (8) ◽

pp. 1845 ◽

Cited By ~ 3

Author(s):

Thanh-Nam Tran ◽

Miroslav Voznak

Keyword(s):

Wireless Networks ◽

Full Duplex ◽

System Throughput ◽

Amplify And Forward ◽

Decode And Forward ◽

Variable Gain ◽

Switching Mechanism ◽

Half Duplex ◽

Protocol Switching

This article studied the application of multiple protocol switching mechanism (PSM) over cooperating Non-Orthogonal Multiple Access (NOMA) networks to minimize the probability of outage and maximize the system throughput and energy efficiency (EE). This study investigated six scenarios: (1) a cooperative NOMA system with half-duplex (HD) and decode-and-forward (DF) protocols at the relay; (2) a cooperative NOMA system with full-duplex (FD) and DF protocols at the relay; (3) a cooperative NOMA system with HD and amplification amplify-and-forward (AF) with fixed-gain (FG) protocols at the relay; (4) a cooperative NOMA system with HD and amplification AF with variable-gain (VG) protocols at the relay; (5) a cooperative NOMA system with FD and amplification AF with FG protocols at the relay; (6) a cooperative NOMA system with FD and amplification AF with VG protocols at the relay. Based on the results of analysis and simulations, the study determined the transmission scenario for best system performance. This paper also proposed a mechanism to switch between HD/FD and DF/AF with FG/VG protocols in order to improve the quality of service (QoS) for users with a weak conditional channel. This mechanism can be deployed in future 5G wireless network sensors. Finally, EE was also assessed in relation to future green-wireless networks (G-WNs).

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Throughput Analysis of Buffer-Aided Decode-and-Forward Wireless Relaying with RF Energy Harvesting

Sensors ◽

10.3390/s20041222 ◽

2020 ◽

Vol 20 (4) ◽

pp. 1222

Author(s):

Phat Huynh ◽

Khoa T. Phan ◽

Bo Liu ◽

Robert Ross

Keyword(s):

Energy Efficiency ◽

Fading Channels ◽

Performance Criteria ◽

Full Duplex ◽

Power Station ◽

Decode And Forward ◽

Half Duplex ◽

Rf Energy ◽

Relay Deployment ◽

Relaying System

In this paper, we investigated a buffer-aided decode-and-forward (DF) wireless relaying system over fading channels, where the source and relay harvest radio-frequency (RF) energy from a power station for data transmissions. We derived exact expressions for end-to-end throughput considering half-duplex (HD) and full-duplex (FD) relaying schemes. The numerical results illustrate the throughput and energy efficiencies of the relaying schemes under different self-interference (SI) cancellation levels and relay deployment locations. It was demonstrated that throughput-optimal relaying is not necessarily energy efficiency-optimal. The results provide guidance on optimal relaying network deployment and operation under different performance criteria.

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