期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2012
卷号：1
期号：4
页码：201-209
出版社：Shri Pannalal Research Institute of Technolgy
摘要：With the rapid growth of digital wireless communication in recent years, the need for high speed mobile data transmission has increased. New modulation techniques are being implemented to keep up with the desired more communication capacity. Processing power has increased to a point where OFDM has become feasible and economical. Some examples of current applications using OFDM include DVB (Digital video broadcasting), DAB (Digital audio broadcasting), and HDTV (high - definition television).OFDM as a transmission technique has been known having a lot of strengths compared to any other transmission technique, such as its high spectral efficiency, its robustness to the channel fading. Orthogonal. frequency division multiplexing (OFDM) has become very popular, allowing high speed wireless communication s. Orthogonal frequency division multiplexing (OFDM) has become very popular, allowing high speed wireless communications. A basic OFDM system consists of a QAM or QPSK modulator, a serial to parallel data, and an IFFT and FFT module, Guard interval inserter, in phase and quadrature phase signal generator, and parallel to serial data. In this thesis I have implemented the OFDM modulator and demodulator by using different types of digital modulation techniques such as BPSK, QPSK, 8-QAM. BER for OFDM by using 8-QAM,16-QAM, 64-QAM . MATLAB environment was used for simulation of proposed algorithm.
