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http://dx.doi.org/10.3837/tiis.2015.06.013

Prototype of a Peak to Average Power Ratio Reduction Scheme in Orthogonal Frequency Division Multiplexing Systems  

Varahram, Pooria (Wireless and Photonic Research Center, Computer and Communication Engineering Department, Universiti Putra Malaysia (UPM))
Ali, Borhanuddin Mohd (Wireless and Photonic Research Center, Computer and Communication Engineering Department, Universiti Putra Malaysia (UPM))
Mohammady, Somayeh (Wireless and Photonic Research Center, Computer and Communication Engineering Department, Universiti Putra Malaysia (UPM))
Reza, Ahmed Wasif (Department of Electrical Engineering, Faculty of Engineering, University of Malaya)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.9, no.6, 2015 , pp. 2201-2216 More about this Journal
Abstract
Peak to average power ratio (PAPR) is one of the main imperfections in the broadband communication systems with multiple carriers. In this paper, a new crest factor reduction (CFR) scheme based on interleaved phase sequence called Dummy Sequence Insertion Enhanced Partial Transmit Sequence (DSI-EPTS) is proposed which effectively reduces the PAPR while at the same time keeps the total complexity low. Moreover, the prototype of the proposed scheme in field programmable gate array (FPGA) is demonstrated. In DSI-EPTS scheme, a new matrix of phase sequence is defined which leads to a significant reduction in hardware complexity due to its less searching operation to extract the optimum phase sequence. The obtained results show comparable performance with slight difference due to the FPGA constraints. The results show 5 dB reduction in PAPR by applying the DSI-EPTS scheme with low complexity and low power consumption.
Keywords
OFDM; PAPR; FPGA; Partial Transmit Sequence; IFFT; Power Amplifier;
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