Performance Analysis of SLM Technique for PAPR Reduction in OFDM Using QPSK Modulation

  • Amol B. KotadeEmail author
  • Anil Nandgaonkar
  • S. L. Nalbalwar
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 810)


Multi-carrier communication is a backbone of fourth-generation (4G) mobile communication due to high-data-rate capability. This multi-carrier communication is facilitated using orthogonal frequency-division multiplexing (OFDM). But high peak-to-average power ratio (PAPR) is a serious problem present in OFDM. High PAPR causes huge battery power consumption. To reduce PAPR, selected mapping (SLM) is one of the good technique from the set of scrambling methods. The performance of SLM technique for QPSK-modulated data with phase offsets of π/4, π/2, and 3π/2 using N = 64, 128, 512, 1024, and 2048 number of subcarriers in MATLAB environment is presented in this article. PAPR results of original OFDM and OFDM with SLM technique are plotted and also presented in tabular form for comparison. We have also investigated the computational complexity of SLM scrambler and descrambler block using Freescale StarCore SC140 architecture simulator.


Selected mapping Peak-to-average power ratio OFDM 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Amol B. Kotade
    • 1
    Email author
  • Anil Nandgaonkar
    • 1
  • S. L. Nalbalwar
    • 1
  1. 1.Electronics and Telecommunication Engineering DepartmentDr. Babasaheb Ambedkar Technological UniversityRaigadIndia

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