DSP-based Synchronization Algorithm Implementation for OFDM

Abstract

Synchronization has been one of the most important research topics in Orthogonal Frequency Division Multiplexing (OFDM) system because of its great sensitivity towards timing and frequency offset errors. This paper describes a real-time implementation of a timing and frequency synchronization for OFDM system using MATLAB software Simulink, DSP processor TMS320C6713 and Code Composer Studio (CCS). The hardware interface converts the baseband signal from the PC to the DSP Processor. Basic transmission and reception performances are evaluated in real time using Real Time data Transfer (RTDX). The practical results and performance evaluation of the synchronization algorithms in OFDM system is presented and discussed. The results are plotted for different offsets of CFO and STO with different values of signal to noise ratio. Also the bit error rate (BER) and the mean square error (MSE) of the system is analyzed.