Design and implementation of high throughput, low-complexity MIMO-OFDM transciever

Abstract

In order to increase the quality of the real time application it is essential to improve the throughput, capability of the network in new generation of WLAN. In recent days, the wide local area networks are combined with MIMO and OFDM wireless technologies. It is well known that OFDM provides a high data rate with low complexity. The robustness of the OFDM provides high data rates. It comprises multiplexing in modulations, so that OFDM can able to increase the interference of the channel. In this paper is focused to improve the quality of service on 802.11n standard MIMO-OFDM wireless systems. To do this, a new extended-OFDM transceiver is designed by modifying the modulation, encoding-decoding and FFT techniques by applying QAM, Optimum Frequency domain response encoding and 64 lines FFT with Radix4 Decimation in Time (DIT) by prime factor algorithm respectively. The main unit of OFDM is FFT. Optimizing FFT requires high attention. Hence by generalizing FFT algorithm the performance of the system is improved in terms of high throughput and low complexity. The simulation results shows that the proposed transceiver is efficient than the existing system.