A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems

Myeon Gyun Cho, Woohyun Seo, Youngsoo Kim, Daesik Hong

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

8 Citations (Scopus)

Abstract

A novel feedback-reduction scheme is proposed for dynamic channel allocation (DCA) in OFDMA systems. Applying this delta-modulation (DM)-based scheme to the channel gain of adjacent subcarriers reduces the feedback information to 1 bit per subcarrier. Since this reduced feedback information can lead to performance degradation in the form of an increased bit error rate (BER), a modified amplitude craving greedy (ACG) method and improved DM are jointly adopted to minimize the loss. Simulation results verify that the proposed scheme can decrease feed-back information by a factor of 1/M while retaining performance comparable to the full feedback case, which requires M bits per subcarrier as feedback information.

Original languageEnglish
Title of host publication2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
Pages2747-2750
Number of pages4
Publication statusPublished - 2005
Event2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005 - Berlin, Germany
Duration: 2005 Sep 112005 Sep 14

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume4

Other

Other2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005
CountryGermany
CityBerlin
Period05/9/1105/9/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems'. Together they form a unique fingerprint.

  • Cite this

    Cho, M. G., Seo, W., Kim, Y., & Hong, D. (2005). A joint feedback reduction scheme using delta modulation for dynamic channel allocation in OFDMA systems. In 2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2005 (pp. 2747-2750). [1651942] (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 4).