Performance analysis of two‐hop decode‐amplify‐forward relayed system in different fading conditions. Issue 4 (8th April 2013)

• Record Type: Journal Article
• Authors: Bansal, Shivali G.; Abawajy, Jemal H.
• Is Part Of: Wireless communications and mobile computing. Volume 15:Issue 4(2015)
• Page Start: 649
• Page End: 665
• Publication Date: 2013-04-08
• Subjects: Wireless communication systems -- Periodicals; Mobile communication systems -- Periodicals; 621.38205
• DOI: 10.1002/wcm.2370
• Languages: English
• ISSNs: 1530-8669

Abstract

<abstract abstract-type="main" id="wcm2370-abs-0001"> <title>Abstract</title> <p id="wcm2370-para-0003">Recent advances in the field of wireless communication have proven the importance of diversity in combating channel fading and improving the bit error rates (BERs). In this report, a dual‐hop decode‐amplify‐forward (DAF) transmission system over Nakagami‐<italic>m</italic> fading channel is studied. The DAF relay system is a hybrid of decode‐and‐forward and amplify‐and‐forward relay systems that shows the benefits of both decode‐and‐forward and amplify‐and‐forward relay systems and is also called hybrid relay system or hybrid DAF relay system. Signal‐to‐noise ratios and BERs for various system models with varying number of transmit and receive antennas have been discussed. The diversity is achieved in two ways: firstly, by the use of relay and secondly, by the use of multiple antennas at both the transmitter and the receiver. Dual‐hop relaying gives better trunking efficiency and with single antenna at the relay site acquisition and antenna structures are much less expensive. The variations in the performance levels when the relay is moved to different locations within the line of sight of the transmitter and the receiver have also been analyzed. BERs with respect to variations in the fading parameter '<italic>m</italic>' have also been presented and discussed. Copyright © 2013 John Wiley &amp; Sons, Ltd.</p> </abstract>