Dual Hop Ostbc Transmission Over Rayleigh Fading Channel For Regenerative System

K. Sujatha; Dr. S. Varadarajan

This paper presents performance analysis of cooperative multiple-input multiple-output (MIMO) relay network system with single-relay. The MIMO scheme is based on Alamouti space time block coding (STBC) over Rayleigh flat fading channels. The source node, equipped with two transmit antennas, simply broadcasts each STB code to the relay and the destination nodes. The relay node, equipped with multiple antennas amplifies-and-forwards (AF) the received STB codes. The destination node applies a maximum ratio combining (MRC) and exploits the diversity gain obtained by the direct and the indirect link simultaneously. The moment generating functions (MGF) of the signal-to-noise ration (SNR) for the direct and the indirect link are given in a closed forms. These statistical results are then applied to derive a lower bound of the symbol error probability (SEP) for a particular signal of M-ary-quadrature-amplitude modulation (M-QAM) and to obtain the outage probability through numerical evaluations. Subsequently, simulation results of the SEP and the outage probabilities are presented to illustrate the performance improvement given by the MIMO cooperative diversity systems based on STBC schemes.

Select Volume / Issues:

• Volume 3 Issue 6, Nov. 2012

Year:

2012

Type of Publication:

Article

Keywords:

MIMO relay channel; space-time block coding; MRC scheme; moment generating function MGF; probability outage

Journal:

IJECCE

Volume:

3

Number:

6

Pages:

1452-1459

Month:

November