Abstract
Abstract Orthogonal frequency division multiplexing (OFDM) differs greatly from the traditional single carrier communication system. It is a multicarrier system with parallel transmission scheme by using a special set of orthogonal carrier frequencies. The advantages of OFDM include that Intersymbol Interference (ISI) becomes small relatively, bigger transmission rate of data, better spectral efficiency, and easy implementation by Fast Fourier Transform (FFT), etc. Therefore, OFDM becomes the main stream of the wireless communication. The WiMAX (IEEE802.16-2004) published in 2004 is an OFDM system. However, the performance of OFDM system will be reduced seriously by the carrier frequency offset and the timing offset. In other words, the advantages of OFDM only base on the well synchronization schemes. In this thesis, we will focus on the timing synchronization algorithm design which includes symbol timing synchronization and sampling frequency synchronization. The simulation result shows that our proposed algorithm has better performance and is suitable for OFDM based systems. Our proposed algorithm also provides low complexity for hardware implementation.