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 language | English |
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| Title of host publication | Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 |
| DOIs | |
| Publication status | Published - 2011 May 20 |
| Event | 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 - Seoul, Korea, Republic of Duration: 2011 Feb 21 → 2011 Feb 23 |
Publication series
| Name | Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 |
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Other
| Other | 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011 |
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| Country | Korea, Republic of |
| City | Seoul |
| Period | 11/2/21 → 11/2/23 |
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All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Information Systems
Cite this
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Channel asymmetry due to cell deployment and service in OFDMA/TDD systems. / Kim, Jisu; Chae, Chan-Byoung; Cho, Sunghyun; Kim, Jae Hyun.
Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011. 2011. 94 (Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Channel asymmetry due to cell deployment and service in OFDMA/TDD systems
AU - Kim, Jisu
AU - Chae, Chan-Byoung
AU - Cho, Sunghyun
AU - Kim, Jae Hyun
PY - 2011/5/20
Y1 - 2011/5/20
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=79956051501&partnerID=8YFLogxK
U2 - 10.1145/1968613.1968724
DO - 10.1145/1968613.1968724
M3 - Conference contribution
AN - SCOPUS:79956051501
SN - 9781450305716
T3 - Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011
BT - Proceedings of the 5th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2011
ER -