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Title: VHDL Implementation of Circularly Shifted PTS Technique for PAPR Reduction in OFDM
Authors: Sahoo, S
Patra, S K
Keywords: OFDM
Circular shift
Issue Date: May-2014
Citation: International Conference on Advanced Communication, Control and Computing Technologies (ICACCCT), Syed Ammal Engineering College, May 8-10, 2014, Ramanathapuram, Tamilnadu, India.
Abstract: This paper presents an efficient VHDL implementation of circularly shifted partial transmit sequence (CS-PTS) scheme for peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) signals. It eliminates the search for optimum phase factors from a given set, which manifests improved PAPR at reduced computational complexity as compared to conventional PTS (C-PTS). The amplitude of the signal is reduced by rotating each of the partially transmitted sequence anti-clockwise by a pre-determined degree and the peak power is reduced by circularly shifting the quadrature component of the partially transmitted sequence after phase rotation. A brief description of C-PTS and CS-PTS is also presented and VHDL implementation of Circularly Shifted PTS is designed. The peak-to-average power ratio performance of the proposed method has been investigated.
Description: Copyright for this article belongs to proceeding publisher
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