Exploiting ldpc codes for improving the performance of clipped-ofdm system

Filbert H. Juwono, Yudhi Triprasetyo, Dadang Gunawan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier transmission technique that becomes the best choice in wireless high-data-rate transmission. The drawbacks of OFDM are high Peak-to-Average Power Ratio (PAPR) and sensitivity to frequency offset. High PAPR decreases the amplifier's efficiency. The simplest PAPR reduction method is clipping, but it gives in-band and out-of-band distortion that degrades the performance of the system. There are various types of clipping, such as classical clipping, deep clipping, and smooth clipping. This paper analyses the use of low-density parity-check (LDPC) codes as an error correction coding (ECC) for those various types of clipping. The simulation results show that classical clipping gives the best performance in PAPR reduction and error probability.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalInternational Journal of Technology
Volume4
Issue number1
Publication statusPublished - 1 Jan 2013

Keywords

  • Classical clipping
  • Deep clipping
  • LDPC codes
  • OFDM
  • PAPR
  • Smooth clipping

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