Wireless Communication Using Orthogonal Frequency Division Multiplexing

Abstract

DMA, TDMA and CDMA are the well-known multiplexing techniques used in wireless communication systems. While working with the wireless systems using these techniques various problems that come across are multi-path fading time dispersion which lead to inter-symbol interference (ISI) lower bit rate capacity requirement of larger transmit power for high bit rate and less spectral efficiency. This paper tells that the utilization of orthogonal recurrence division multiplexing (OFDM) procedure gives better answer for the aforementioned issues then previously used techniques. The advantages of OFDM are high spectral effectiveness, flexibility of RF obstruction, and lower multi-way contortion. OFDM is a capable balance method that is prepared to do high information rate and can dispose of ISI.

Keywords: communication systems, multiplexing, orthogonal recurrence division multiplexing