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