Joint PAPR and PICR Design in OFDM Systems

High peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals results in inefficient operations of nonlinear devices used in OFDM systems and high peak interference-to-carrier ratio (PICR) of received signals degrades bit-error rate (BER) performance of the system. Joint design problem for OFDM systems considering both PAPR and PICR is investigated in this paper. We formulate a joint constrained and a joint weighted PAPR-PICR reduction problems, so that both PAPR and PICR are reduced and the performance of the system is improved. Algorithms are also developed to solve the joint PAPR and PICR design problems. Simulation results are presented to demonstrate efficacy of the proposed algorithms in reducing PAPR and PICR.