Adaptive multicarrier system with reduced feedback information in wideband radio channels

Hyunsoo Cheon, Byungjoon Park, Daesik Hong

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

Generally, adaptive modulation requires precise channel estimation and channel state information feedback. In a wireless channel, a large portion of total transmitting information is occupied by the feedback information due to the frequent adaptation to time-varying channel attenuation. In this paper, we propose an adaptive multicarrier system which adopts reduced feedback information for wireless application. This scheme is based on the general bit loading pouring algorithm, and suggests that the channel state information can be unified to the fractional number of loaded bits and it can be feedbacked differentially. In addition, we apply a linear predictor to reduce the degradation during the feedback interval.

Original languageEnglish
Pages (from-to)2880-2884
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume5
Publication statusPublished - 1999 Dec 1
EventProceedings of the 1999 VTC - Fall IEEE VTS 50th Vehicular Technology Conference 'Gateway to 21st Century Communications Village' - Amsterdam, Neth
Duration: 1999 Sep 191999 Sep 22

Fingerprint

Multicarrier
Feedback
Channel state information
Channel State Information
Adaptive Modulation
Time-varying Channels
Adaptive modulation
Channel Estimation
Channel estimation
Attenuation
Predictors
Degradation
Fractional
Interval

All Science Journal Classification (ASJC) codes

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

Cite this

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Adaptive multicarrier system with reduced feedback information in wideband radio channels. / Cheon, Hyunsoo; Park, Byungjoon; Hong, Daesik.

In: IEEE Vehicular Technology Conference, Vol. 5, 01.12.1999, p. 2880-2884.

Research output: Contribution to journalConference article

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AB - Generally, adaptive modulation requires precise channel estimation and channel state information feedback. In a wireless channel, a large portion of total transmitting information is occupied by the feedback information due to the frequent adaptation to time-varying channel attenuation. In this paper, we propose an adaptive multicarrier system which adopts reduced feedback information for wireless application. This scheme is based on the general bit loading pouring algorithm, and suggests that the channel state information can be unified to the fractional number of loaded bits and it can be feedbacked differentially. In addition, we apply a linear predictor to reduce the degradation during the feedback interval.

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