DMCA
Peer-Reviewed Technical Communication OFDM-Modulated Dynamic Coded Cooperation in Underwater Acoustic Channels
BibTeX
@MISC{Chen_peer-reviewedtechnical,
author = {Yougan Chen and Zhaohui Wang and Lei Wan and Student Member and Hao Zhou and Shengli Zhou and Xiaomei Xu},
title = {Peer-Reviewed Technical Communication OFDM-Modulated Dynamic Coded Cooperation in Underwater Acoustic Channels},
year = {}
}
Share
 |
 |
 |
 |
||
OpenURL
Abstract
Abstract—Dynamic coded cooperation (DCC) allows relay diversity without altering the transmission procedure from the source to the destination. In this paper, we propose a practical orthogonal frequency-division multiplexing (OFDM)-modulated DCC scheme for underwater relay networks, where OFDM mod-ulation accommodates multipath fading channels with large delay spread. Two cooperation strategies are studied, where the relay transmits either identical or different OFDM blocks as the source during the cooperation phase. The block-level synchronization be-tween the OFDM blocks from the source and the relay is achieved by a delay control mechanism at the relay, by knowing the dis-tances among the source, relay, and destination. Two OFDM–DCC design examples are presented, one based on nonbinary rate-com-patible low-density parity-check (LDPC) codes applied across multiple OFDM blocks, and the other using layered interblock
