An asynchronous two-way relay system with full delay diversity in time-varying multipath environments
Computing, Networking and Communications（2015）
Abstract
We consider design of asynchronous OFDM-based diamond two-way-relay (DTWR) systems in time-varying frequency-selective (doubly-selective) fading channels such as underwater acoustic (UWA) channels. In a DTWR channel, two users exchange their messages with the help of two relays. Most of the existing work on asynchronous DTWR systems assume only small relative propagation delays between the received signals at each node. However, in practical systems, significant delays may take place. Our proposed system is able to tolerate the delay even if it exceeds the length of the OFDM block which is almost inevitable in UWA channels. We provide analytical and numerical results to verify the advantages of the proposed scheme in mitigating large delays in different fading conditions.
MoreTranslated text
Key words
ofdm modulation,acoustic wave propagation,diversity reception,fading channels,multipath channels,relay networks (telecommunication),synchronisation,time-varying channels,underwater acoustic communication,dtwr channel,ofdm block,uwa channels,asynchronous dtwr systems,asynchronous ofdm,asynchronous two-way relay system,delay diversity,diamond two-way-relay systems,doubly-selective fading channels,propagation delays,time-varying frequency-selective fading channels,time-varying multipath environments,underwater acoustic channels,signal processing,artificial neural networks,hafnium,decision support systems
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined