Low-complexity soft-input soft-output demodulation of orthogonal modulation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

6 Scopus Citations
View graph of relations

Author(s)

  • Shuling Che
  • Peng Wang
  • Li Ping
  • Xinmei Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)919-921
Journal / PublicationIEEE Communications Letters
Volume11
Issue number12
Publication statusPublished - Dec 2007

Abstract

This letter is concerned with the soft-input softoutput (SISO) demodulation of M-ary (M = 2r) orthogonal modulation. We prove that the SISO orthogonal demodulation (SISO-OD) is equivalent to the SISO decoding of orthogonal Hadamard codes, for which we deduct a posteriori probability fast Hadamard transform (APP-FHT) algorithm. With FHT and the proposed APP-FHT, the demodulation complexity can be reduced from O(r2r) to O(2r) exponential/logarithm operations and O(r22r) to O(2r) additions, respectively. © 2007 IEEE.

Research Area(s)

  • Fast Hadamard transform, Hadamard codes, Orthogonal modulation, Soft-input soft-output demodulation

Citation Format(s)

Low-complexity soft-input soft-output demodulation of orthogonal modulation. / Che, Shuling; Wang, Peng; Ping, Li; Wang, Xinmei.

In: IEEE Communications Letters, Vol. 11, No. 12, 12.2007, p. 919-921.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review