Peak To Average Power Ratio Reduction Techniques In The OFDM Systems

Wireless communications of today is moving from cellular networks towards moredistributed, self-configuring networks. Wireless had a huge growth over thepassing years, first with cellular phones, then WiFi and so on.Orthogonal Frequency Division Multiplexing (OFDM) is the prominent candidatefor the next generation of wireless communications physical layer standards. ThePeak to Average Power Ratio (PAPR) is currently viewed as an importantimplementation issue in communication systems. Specifically, for wireless cellularsystems the price of the mobile unit is required to remain low. High PAPR is oneof the challenging issues for the Orthogonal Frequency Division Multiplexing.This thesis is about several PAPR reduction techniques and the relatedoptimization problems. Many criteria involve in the selection of a PAPR reductiontechnique e.g. capacity, power increase, BER, complexity and throughput. A mainconsideration is that the cost of extra complexity for PAPR reduction is lower thanthe cost of power inefficiency.