Abstract
In this paper we present a new scheme for performance improvements of orthogonal frequency division multiplexing (OFDM) based simple cooperative relaying with virtual orthogonal space time block coding (OSTBC). The proposed scheme is implemented in simple cooperative relaying system which is used for achieving 4th order diversity. This system 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 scheme is to improve bit error rate (BER) performance and code rate of the OFDM based simple cooperative system with virtual OSTBC. It is shown that the proposed scheme provides evident performance improvements.
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