Adaptive channel assignment and pilot-less channel tracking method for OFDMA systems

Kazumitsu Sakamoto, Osamu Muta, Yoshihiko Akaiwa, K. Giridhar, Hiroshi Furukawa

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

Abstract

OFDMA (Orthogonal frequency division multiple access) based systems have been considered as a candidate for future wireless communication systems. In such a system, it is important to provide high data rate services for users with high mobility. For this purpose, decision-directed channel tracking (DDCT) techniques have been investigated for OFDM systems in high mobility environments. The performance of the DDCT in OFDMA systems depends on the assigned channel condition, and therefore it is important to allocate a proper channel to each user. The purpose of this paper is to propose an adaptive channel assignment method which enhances the DDCT improvement in an OFDMA system, where the former numbered resource blocks (RBs) in OFDMA frame are preferentially allocated to the users moving at a high speed. Computer simulation results show that the proposed method is effective in improving throughput performance of OFDMA systems in a high Doppler frequency condition.

Original languageEnglish
Title of host publication4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings
DOIs
Publication statusPublished - Dec 1 2010
Event4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Gold Coast, QLD, Australia
Duration: Dec 13 2010Dec 15 2010

Publication series

Name4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings

Other

Other4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010
CountryAustralia
CityGold Coast, QLD
Period12/13/1012/15/10

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Signal Processing

Cite this

Sakamoto, K., Muta, O., Akaiwa, Y., Giridhar, K., & Furukawa, H. (2010). Adaptive channel assignment and pilot-less channel tracking method for OFDMA systems. In 4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings [5709724] (4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings). https://doi.org/10.1109/ICSPCS.2010.5709724