PAPR reduction using artificial bee colony algorithm in OFDM systems

Authors : Necmi TAŞPINAR, Derviş KARABOĞA, Mahmut YILDIRIM

Pages : 47-58

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Partial transmit sequence insert ignore into journalissuearticles values(PTS); is an attractive scheme for peak-to-average power ratio insert ignore into journalissuearticles values(PAPR); reduction in orthogonal frequency division multiplexing insert ignore into journalissuearticles values(OFDM); systems, but its high computational complexity to find optimum phase factors is the main drawback. In this paper, we propose PTS based on an artificial bee colony insert ignore into journalissuearticles values(ABC); algorithm insert ignore into journalissuearticles values(ABC-PTS); for reducing the computational complexity of the PTS in the OFDM system. The ABC-PTS was compared to conventional PTS using a random search strategy insert ignore into journalissuearticles values(RS-PTS); and optimum PTS. In addition, the bit error rate insert ignore into journalissuearticles values(BER); performance of the ABC-PTS was shown when a high power amplifier insert ignore into journalissuearticles values(HPA); was used for additive white Gaussian noise insert ignore into journalissuearticles values(AWGN); and Rayleigh flat fading channel models. Solid state power amplifiers insert ignore into journalissuearticles values(SSPA); and traveling wave tube amplifiers insert ignore into journalissuearticles values(TWTA); are commonly used HPA models, and simulations were realized for both of these HPA models. Simulation results showed that the ABC-PTS is highly successful in reducing the computational complexity of the conventional PTS and BER performances in the OFDM system.
Keywords : Orthogonal frequency division multiplexing OFDM, , peak to average power ratio PAPR, , partial transmit sequences