Multiuser bit-interleaved coded OFDM with limited feedback information

Chang Kyung Sung, Inkyu Lee

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

2 Citations (Scopus)

Abstract

In wireless access systems, there has been much interest in enhancing the performance of orthogonal frequency division multiplexing (OFDM) in a frequency selective fading channel. If the channel is static and is perfectly known to both the transmitter and the receiver, the water-filling technique with adaptive modulation is known to be optimal [1]. However, for OFDM systems, this requires intensive traffic overheads for reporting channel side information on all subcarriers to the transmitter. In this paper, we propose an adaptive modulation and coding scheme for bit-interleaved coded OFDM (BIC-OFDM) for downlink packet transmissions with reduced feedback information. To minimize the feedback information, we employ a rate adaptation method based on the OFDM symbol rather than on each subcarrier. To illustrate the performance gap between the optimal water-filling and the proposed scheme, we will compare cutoff rates for both schemes. It is shown that the loss is less than 2dB while the proposed scheme significantly reduces the feedback payloads. Also, the OFDM system in multiuser environment with subcarrier grouping is considered. It is shown that by exploiting multiuser diversity the throughput of the proposed scheme approaches the channel outage capacity as the number of users and the number of subcarrier groups increase.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1016-1020
Number of pages5
Volume2
ISBN (Print)0780391527
DOIs
Publication statusPublished - 2015
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 2005 Sep 252005 Sep 28

Other

Other62nd Vehicular Technology Conference, VTC 2005
CountryUnited States
CityDallas
Period05/9/2505/9/28

Fingerprint

Limited Feedback
Orthogonal Frequency Division multiplexing (OFDM)
Orthogonal frequency division multiplexing
Feedback
Adaptive modulation
Transmitter
Transmitters
Receivers (containers)
Adaptive Modulation and Coding
Adaptive Modulation
Multiuser Diversity
Rate Adaptation
Water
Frequency selective fading
Side Information
Fading Channels
Outages
Grouping
Fading channels
Throughput

ASJC Scopus subject areas

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

Cite this

Sung, C. K., & Lee, I. (2015). Multiuser bit-interleaved coded OFDM with limited feedback information. In IEEE Vehicular Technology Conference (Vol. 2, pp. 1016-1020). [1558079] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VETECF.2005.1558079

Multiuser bit-interleaved coded OFDM with limited feedback information. / Sung, Chang Kyung; Lee, Inkyu.

IEEE Vehicular Technology Conference. Vol. 2 Institute of Electrical and Electronics Engineers Inc., 2015. p. 1016-1020 1558079.

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

Sung, CK & Lee, I 2015, Multiuser bit-interleaved coded OFDM with limited feedback information. in IEEE Vehicular Technology Conference. vol. 2, 1558079, Institute of Electrical and Electronics Engineers Inc., pp. 1016-1020, 62nd Vehicular Technology Conference, VTC 2005, Dallas, United States, 05/9/25. https://doi.org/10.1109/VETECF.2005.1558079
Sung CK, Lee I. Multiuser bit-interleaved coded OFDM with limited feedback information. In IEEE Vehicular Technology Conference. Vol. 2. Institute of Electrical and Electronics Engineers Inc. 2015. p. 1016-1020. 1558079 https://doi.org/10.1109/VETECF.2005.1558079
Sung, Chang Kyung ; Lee, Inkyu. / Multiuser bit-interleaved coded OFDM with limited feedback information. IEEE Vehicular Technology Conference. Vol. 2 Institute of Electrical and Electronics Engineers Inc., 2015. pp. 1016-1020
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