Ber Perfomance Of Ldpc & Rs Code In Stbc – Ofdm System

Abstract: We Analysis will be carried out for an OFDM wireless communication system using space time block code (STBC) at the transmitter and considering the effect and the wireless channel like delay spread and fading. The analysis will include the effect of imperfect timing recovery at the output of the receiver. In this contribution both Low-Density Parity-Check (LDPC) coding and RS coding space-time block coded OFDM is investigated. We analysis this paper comparing the coding technique (Ldpc & Rs code) using multiple transmit & receiving antenna in digital modulation technique BPSK , QPSK over and additive white Gaussian noise (AWGN) and other fading (Rayleigh and Rician) channel. It is anticipated from the BER simulation that the performance of the communication system degrades with the increase of noise power.

Keywords: Additive white Gaussian noise (AWGN), Low density parity cheak (LDPC), RS code , Bit error rate (BER) , Orthogonal frequency division multiplexing (OFDM) Multiple antenna ,Space time block coding (STBC)