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Performance of cooperative amplify-and-forward protocols in vehicular ad-hoc networks

Title	Performance of cooperative amplify-and-forward protocols in vehicular ad-hoc networks
Author	Tirkan, Z., Shirkhani, M., Taherpour, A., Uysal, Murat
Publication Date:	2012
Publication Place	- IEEE
Subject	Rayleigh channels, Error statistics, Fading, Protocols, Vehicular ad hoc networks
Type	Document
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	978-1-4673-5829-3
Record ID	15354f73-6000-4fea-97cd-ead87144eeb5
Library Location	Electrical & Electronics Engineering
Date	2012
Notes	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text	Cooperative diversity is a technique where the diversity associated with spatially distributed users is exploited to overcome violent fading in wireless channels. In vehicle-to-vehicle (V2V) communication systems, where fading is severe due to mobility of both transmitters and receivers, cooperative diversity is an acceptable technique to enhance the performance of high-rate communications. In this paper, we investigate a single-relay half-duplex system and deal with the performance of three time-division-multiple-access (TDMA) amplify-and-forward protocols over double-Rayleigh fading channels. In a mobile-to-mobile (M2M) communication system, the communication channel is often modeled as a cascaded Rayleigh fading channel. We determine pairwise error probability (PEP) for the studied protocols, then we investigate optimal power allocation for these cooperative protocols, where the optimality is determined in terms of minimizing the bit error rate (BER) of the system. Based on the relay position and modulation type, optimization of power allocated to source and relay results performance improvement up to 3dB for Protocols I and II, and up to 7dB for Protocol III.
DOI	10.1109/WCSP.2012.6542978

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Performance of cooperative amplify-and-forward protocols in vehicular ad-hoc networks

Author Tirkan, Z., Shirkhani, M., Taherpour, A., Uysal, Murat

Publication Date 2012

Publication Place - IEEE

Subject Rayleigh channels, Error statistics, Fading, Protocols, Vehicular ad hoc networks

Type Document

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 978-1-4673-5829-3

Record ID 15354f73-6000-4fea-97cd-ead87144eeb5

Library Location Electrical & Electronics Engineering

Date 2012

Notes Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Sample Text Cooperative diversity is a technique where the diversity associated with spatially distributed users is exploited to overcome violent fading in wireless channels. In vehicle-to-vehicle (V2V) communication systems, where fading is severe due to mobility of both transmitters and receivers, cooperative diversity is an acceptable technique to enhance the performance of high-rate communications. In this paper, we investigate a single-relay half-duplex system and deal with the performance of three time-division-multiple-access (TDMA) amplify-and-forward protocols over double-Rayleigh fading channels. In a mobile-to-mobile (M2M) communication system, the communication channel is often modeled as a cascaded Rayleigh fading channel. We determine pairwise error probability (PEP) for the studied protocols, then we investigate optimal power allocation for these cooperative protocols, where the optimality is determined in terms of minimizing the bit error rate (BER) of the system. Based on the relay position and modulation type, optimization of power allocated to source and relay results performance improvement up to 3dB for Protocols I and II, and up to 7dB for Protocol III.

DOI 10.1109/WCSP.2012.6542978