Implementation of Pulse Shaping Techniques in OFDM System
Tremendous improvement has been made possible in wireless technology due to success of OFDM system which is a multi carrier modulation technique with capability to support high data rates. Despite its many advantages OFDM has failed against Inter Symbol Interference (ISI), high sensitivity to Inter Carrier Interference (ICI), high Peak to Average Power Ratio (PAPR), phase noise and band limited channel. Hence the performance of an OFDM system is highly affected by the aforementioned undesired phenomenon. For this reason bandlimited system often employs pulse shaping techniques. In this paper, pulse shaping of multi carrier signal is introduced by using various pulse shapes like RECtangular pulse (REC), Raised Cosine pulse (RC), Better Than Raised Cosine pulse (BTRC), Sinc Power pulse (SP) and Improved Sinc Power pulse (ISP).