Adaptive bit-interleaved coded OFDM with reduced feedback information

Kyung Sung Chang, 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, this requires intensive traffic overheads for reporting channel state information on all subcarriers. In this paper, we consider an adaptive modulation and coding scheme for bit-interleaved coded OFDM with reduced feedback information satisfying a specified quality of service level. We propose a rate adaptation scheme which utilizes the estimated bit error rate for supportable transmission rates. In this scheme, a user equipment chooses the best modulation and coding scheme (MCS) level based on one OFDM symbol rather than on the whole subcarriers, then the user needs to send back only the selected MCS level index. The proposed scheme does not require the water-filling procedure and the amount of the feedback reduces to a single integer value irrespective of the number of subcarriers. Simulation results show that the proposed scheme can significantly reduce the system complexity while minimizing the performance loss compared to the optimum water-filling scheme.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages4630-4635
Number of pages6
Volume10
DOIs
Publication statusPublished - 2006 Dec 1
Event2006 IEEE International Conference on Communications, ICC 2006 - Istanbul, Turkey
Duration: 2006 Jul 112006 Jul 15

Other

Other2006 IEEE International Conference on Communications, ICC 2006
CountryTurkey
CityIstanbul
Period06/7/1106/7/15

ASJC Scopus subject areas

  • Media Technology

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  • Cite this

    Chang, K. S., & Lee, I. (2006). Adaptive bit-interleaved coded OFDM with reduced feedback information. In IEEE International Conference on Communications (Vol. 10, pp. 4630-4635). [4024768] https://doi.org/10.1109/ICC.2006.255370