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Universal soft decision demodulator for M-ary adaptive modulation systems

  • Meixiang Zhang*
  • , Sooyoung Kim
  • , Youngmin Kim
  • *Corresponding author for this work

Research output: Conference(x)Paperpeer-review

Abstract

In this paper, we present a very simple soft demapping algorithm for M-ary PSK and QAM schemes and their universal implementation for adaptive modulation systems. The proposed scheme estimates soft bit information contained in a symbol, with complexity that increases linearly, with modulation order, and achieves approximating performance to maximum likelihood detection. In addition, universal implementation of any M order modulation enables simple single hardware implementation of a demodulator in adaptive systems employing multiple modulation orders.

Original languageEnglish
Pages574-578
Number of pages5
DOIs
StatePublished - 2012
Event18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012 - Jeju Island, Korea, Republic of
Duration: 2012.10.152012.10.17

Conference

Conference18th Asia-Pacific Conference on Communications: "Green and Smart Communications for IT Innovation", APCC 2012
Country/TerritoryKorea, Republic of
CityJeju Island
Period12.10.1512.10.17

Keywords

  • adaptive modulation
  • soft decision
  • soft demapping

Quacquarelli Symonds(QS) Subject Topics

  • Computer Science & Information Systems

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