Channel asymmetry due to cell deployment and service in OFDMA/TDD systems

Jisu Kim, Chan Byoung Chae, Sunghyun Cho, Jae Hyun Kim

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

2 Citations (Scopus)

Abstract

This paper studies the channel asymmetric characteristic between a downlink and an uplink channel in orthogonal frequency division multiple access (OFDMA)/time division duplexing (TDD) systems. To investigate the downlink and uplink channel asymmetry, we derive a propagation loss model and a shadowing model taking into consideration geometrical information and inter-cell interference. Then, the channel asymmetric cases are introduced based on the proposed channel models. Numerical results show that the causes of the uplink and downlink channel asymmetry are mainly due to the coverage of neighbor cells and the usage ratio of uplink and downlink traffic. As coverage of neighbor cells increases, an uplink signal to interference and noise ratio (SINR) becomes lower than that of a downlink SINR. In addition, as uplink traffic of mobile stations (MSs) increases, an uplink SINR decreases. increases.

Original languageEnglish
Title of host publicationProceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011
DOIs
Publication statusPublished - 2011
Event5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 - Seoul, Korea, Republic of
Duration: 2011 Feb 212011 Feb 23

Publication series

NameProceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011

Other

Other5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011
CountryKorea, Republic of
CitySeoul
Period11/2/2111/2/23

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Information Systems

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  • Cite this

    Kim, J., Chae, C. B., Cho, S., & Kim, J. H. (2011). Channel asymmetry due to cell deployment and service in OFDMA/TDD systems. In Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 [94] (Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011). https://doi.org/10.1145/1968613.1968724