Summary
IEICE Information and Communication Technology Forum
2013
Session Number:COMM5
Session:
Number:COMM5-4
A Solution for Improving BER Performance of OFDM based Simple Cooperative Relaying
Ugljesa Urosevic,
pp.-
Publication Date:2013-07-20
Online ISSN:2188-5079
Summary:
In this paper we present a solution for improving BER performance of orthogonal frequency division multiplexing (OFDM) based simple cooperative relaying which is used for achieving 4th order diversity. The proposed solution is implemented in OFDM based simple cooperative relaying schemes with virtual orthogonal space time block coding (OSTBC) and quasi orthogonal space time block coding (QOSTBC). Each of these two schemes includes one base station with two antennas, two relay stations with a single antenna and one mobile station with a single antenna. The aim of the proposed solution is to improve bit error rate (BER) performance of the OFDM based cooperative scheme with virtual OSTBC and QOSTBC, by mapping subcarriers at relay stations (RS). It is shown that the schemes with included subcarrier mapping obviously outperform BER performance of simple cooperative relaying schemes without subcarriers mapping.