Design criteria for phase sequences in selected mapping

Naoto Ohkubo, Tomoaki Ohtsuki

Research output: Contribution to journalConference article

Abstract

Multicarrier code division multiple access (MC-CDMA) has attracted much attention as the forth generation mobile communication system, because it can realize high-bitrate and high capacity transmission by multiplexing information symbols of many users with orthogonal codes. One disadvantage of multicarrier modulation is its high Peak-to-Average Power Ratio (PAPR) that results in nonlinear distortion at a high power amplifier (HPA) and the degradation of the bit error rate (BER). Various methods have been proposed for reducing PAPR. Among them, Partial Transmit Sequences (PTS) and Selected Mapping (SLM) have been investigated intensively. PTS and SLM have been applied to MC-CDMA. We showed that SLM is more effective than PTS at the same amount of side information. We also showed that the random sequences can reduce the PAPR most as phase sequences in SLM by computer simulation. However, it has not been clarified why the random sequences are good as phase sequences in SLM and how we should design phase sequences in SLM. In this paper, we propose design criteria for phase sequences in SLM.

Original languageEnglish
Pages (from-to)373-377
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume57
Issue number1
Publication statusPublished - 2003 Sep 1
Event57th IEEE Semiannual Vehicular Technology Conference (VTC2003) - Jeju, Korea, Republic of
Duration: 2003 Apr 222003 Apr 25

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ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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