On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications
This paper studies the ergodic capacity (EC) of full-duplex (FD) amplify-and-forward (AF) and decode-and-forward (DF) relay system with energy harvesting (EH) for vehicle-to-vehicle (V2V) communications. Unlike previous works on FD-EH systems, we consider the case that both relay and destination are...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Hindawi-Wiley
2021-01-01
|
Series: | Wireless Communications and Mobile Computing |
Online Access: | http://dx.doi.org/10.1155/2021/8865615 |
id |
doaj-af75cad3dabb44f8bf19c782d1797973 |
---|---|
record_format |
Article |
spelling |
doaj-af75cad3dabb44f8bf19c782d17979732021-02-15T12:52:48ZengHindawi-WileyWireless Communications and Mobile Computing1530-86691530-86772021-01-01202110.1155/2021/88656158865615On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle CommunicationsBa Cao Nguyen0Xuan Hung Le1Van Duan Nguyen2Le The Dung3Telecommunications University, Khanh Hoa Province, VietnamTelecommunications University, Khanh Hoa Province, VietnamTelecommunications University, Khanh Hoa Province, VietnamDivision of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, VietnamThis paper studies the ergodic capacity (EC) of full-duplex (FD) amplify-and-forward (AF) and decode-and-forward (DF) relay system with energy harvesting (EH) for vehicle-to-vehicle (V2V) communications. Unlike previous works on FD-EH systems, we consider the case that both relay and destination are mobile vehicles while the source is a static base station. We mathematically derive the exact closed-form expressions of ECs of both AF and DF protocols of the considered FD-EH-V2V relay system over cascade (double) Rayleigh fading. Our numerical results show that the ECs in the case of the V2V communication system are reduced compared to those in the case of stationary nodes. Also, with a specific value of residual self-interference (RSI), the ECs of the considered FD-EH-V2V relay system can be higher or lower than those of half-duplex- (HD-) EH-V2V system, depending on the average transmission power of the source. Furthermore, when the transmission power of the source and RSI are fixed, the ECs of the considered system can achieve peak values by using optimal EH time duration. On the other hand, the ECs of both AF and DF protocols reach the capacity floors in the high signal-to-noise ratio (SNR) regime due to the RSI impact. Also, the effect of RSI dominates the impact of cascade Rayleigh fading in the high SNR regime. Finally, we validate our analysis approach through Monte-Carlo simulations.http://dx.doi.org/10.1155/2021/8865615 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ba Cao Nguyen Xuan Hung Le Van Duan Nguyen Le The Dung |
spellingShingle |
Ba Cao Nguyen Xuan Hung Le Van Duan Nguyen Le The Dung On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications Wireless Communications and Mobile Computing |
author_facet |
Ba Cao Nguyen Xuan Hung Le Van Duan Nguyen Le The Dung |
author_sort |
Ba Cao Nguyen |
title |
On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications |
title_short |
On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications |
title_full |
On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications |
title_fullStr |
On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications |
title_full_unstemmed |
On the Capacity of Full-Duplex AF/DF Relay System with Energy Harvesting for Vehicle-to-Vehicle Communications |
title_sort |
on the capacity of full-duplex af/df relay system with energy harvesting for vehicle-to-vehicle communications |
publisher |
Hindawi-Wiley |
series |
Wireless Communications and Mobile Computing |
issn |
1530-8669 1530-8677 |
publishDate |
2021-01-01 |
description |
This paper studies the ergodic capacity (EC) of full-duplex (FD) amplify-and-forward (AF) and decode-and-forward (DF) relay system with energy harvesting (EH) for vehicle-to-vehicle (V2V) communications. Unlike previous works on FD-EH systems, we consider the case that both relay and destination are mobile vehicles while the source is a static base station. We mathematically derive the exact closed-form expressions of ECs of both AF and DF protocols of the considered FD-EH-V2V relay system over cascade (double) Rayleigh fading. Our numerical results show that the ECs in the case of the V2V communication system are reduced compared to those in the case of stationary nodes. Also, with a specific value of residual self-interference (RSI), the ECs of the considered FD-EH-V2V relay system can be higher or lower than those of half-duplex- (HD-) EH-V2V system, depending on the average transmission power of the source. Furthermore, when the transmission power of the source and RSI are fixed, the ECs of the considered system can achieve peak values by using optimal EH time duration. On the other hand, the ECs of both AF and DF protocols reach the capacity floors in the high signal-to-noise ratio (SNR) regime due to the RSI impact. Also, the effect of RSI dominates the impact of cascade Rayleigh fading in the high SNR regime. Finally, we validate our analysis approach through Monte-Carlo simulations. |
url |
http://dx.doi.org/10.1155/2021/8865615 |
work_keys_str_mv |
AT bacaonguyen onthecapacityoffullduplexafdfrelaysystemwithenergyharvestingforvehicletovehiclecommunications AT xuanhungle onthecapacityoffullduplexafdfrelaysystemwithenergyharvestingforvehicletovehiclecommunications AT vanduannguyen onthecapacityoffullduplexafdfrelaysystemwithenergyharvestingforvehicletovehiclecommunications AT lethedung onthecapacityoffullduplexafdfrelaysystemwithenergyharvestingforvehicletovehiclecommunications |
_version_ |
1714867173666586624 |