Paper Info
Title
Performances of Amplify-and-Forward based wireless relay networks with Traveling-Wave Tube Amplifiers
Abstract
Due to the constraint of cost for relay nodes, nonlinear power amplifiers are employed in wireless relay networks. In this paper, we investigate the effect of Traveling-Wave Tube Amplifiers (TWTA) on the performances of Amplify-and-Forward based relay networks. Through Bussgang linearization theory, the nonlinear amplifying process can be equivalently expressed as a linear process with a random distortion term. Accordingly, the signal to noise distortion ratio (SNDR) is derived. Furthermore, we also give the instantaneous capacity and symbol error rate at the receiver. By the simulations, the validity of our analysis is verified. It is found that if the transmit power exceeds a threshold the system performances start to degrade. The analytical method in this paper can be employed to evaluate the performances for other nonlinear processes.
Year
DOI
Venue
2013
10.1109/WCSP.2013.6677129
WCSP
Keywords
Field
DocType
relay networks (telecommunication),travelling wave tubes,traveling-wave tube amplifiers,bussgang linearization theory,transmit power,random distortion term,nonlinear power amplifiers,signal to noise distortion ratio,cost,relay nodes,wireless relay networks,costing,amplify-and-forward,amplify and forward communication,nonlinear amplifying process
Traveling-wave tube,Relay channel,Transmitter power output,Telecommunications,Computer science,Signal-to-noise ratio,Real-time computing,Electronic engineering,Distortion,Linearization,Relay,Amplifier
Conference
ISSN
Citations 
PageRank 
2325-3746
2
0.36
References 
Authors
8
3
Name
Order
Citations
PageRank
Chao Zhang19719.35
Ying Zhang2162.94
Zhenzhen Gao39819.18