Effectiveness of OFDM with antenna diversity

During the last two decades, there is a rapid growth in demand of data rate and quality of service. As in wireless environment, signals undergo fading, multipath delay spread and inter symbol interference due to frequency selectivity at the receiver side that´s why single carrier mobile communication systems are not preferred. This leads to a high probability of error and degrade the system´s overall performance. The solution to these problems is the use of multicarrier system such as OFDM (orthogonal frequency division multiplexing). The reason of using OFDM system is its low complexity implementation for high speed system compared to single carrier techniques. This paper will evaluate the performance of OFDM system using Space-Time diversity technique. Performance evaluation of OFDM system is measured in terms of BER vs. SNR simulation has been done using MATLAB.