Blind and semiblind detection of OFDM signals in the multipath fading channel

Jen Hsien Chen, Ming-Xian Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper considers the problem of blind symbol detection for the orthogonal frequency-division multiplexing (OFDM) system in the multipath fading channel. Unlike [11] that uses a polynomial to model the variation of channel responses (CRs) across subchannels, we employ the model of channel impulse response (CIR) which takes into consideration of the correlation between the real and imaginary parts of CRs across subchannels. The branch-and-bound principle is used to solve the nonlinear integer programming problem associated with the blind detection problem. We further propose a method to obtain a better initial sequence in each tree search based on channel prediction, and this leads to the complexity reduction for the blind detection algorithm. Simulation results show that by using the CIR model in blind detection, we can obtain better performance than [11], and the complexity reduction based on a better initial sequence is effective.

Original languageEnglish
Title of host publication2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
Pages1409-1413
Number of pages5
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 - Houston, TX, United States
Duration: 2011 Dec 52011 Dec 9

Publication series

Name2011 IEEE GLOBECOM Workshops, GC Wkshps 2011

Other

Other2011 IEEE GLOBECOM Workshops, GC Wkshps 2011
CountryUnited States
CityHouston, TX
Period11-12-0511-12-09

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Communication

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    Chen, J. H., & Chang, M-X. (2011). Blind and semiblind detection of OFDM signals in the multipath fading channel. In 2011 IEEE GLOBECOM Workshops, GC Wkshps 2011 (pp. 1409-1413). [6162418] (2011 IEEE GLOBECOM Workshops, GC Wkshps 2011). https://doi.org/10.1109/GLOCOMW.2011.6162418