PAPR Reduction Technique in OFDM System For 4G Wireless Applications Using Partial Transmit Sequence Method

TLDR: PTS technique for 4G wireless communication applications is analyzed and simulated and it is observed that the PTS techniques are more efficient, practical and attractive.

Abstract: At present for high data rate transmission, orthogonal frequency division multiplexing (OFDM) is the best and efficient modulation and multiplexing scheme adapted for 4G wireless communication applications. OFDM is an efficient method of data transmission for high speed communication system. OFDM is a multicarrier modulation technique that provides high band width efficiency because the carriers are orthogonal to each other and multiple carriers share the existing data. The main drawback of OFDM system is the high peak to average power ratio (PAPR) of the transmitted signal. OFDM consist of large number of independent sub carriers as a result of which amplitude of such a signal can have high peak valves .The Different PAPR reduction techniques available, such as Clipping, Companding, Selective Mapping (SLM), Interleaving, Tone reservation (TR) Tone Injection (TI) and Partial Transmit Sequence (PTS) and made comparison between them. In this paper, we analyzed and simulated PTS technique for 4G wireless communication applications. In this the data block to be transmitted is partitioned in to disjoint sub blocks. It is the combination of phase factors to minimize PAPR. It is observed that the PTS techniques are more efficient, practical and attractive.