Paper Abstract and Keywords |
Presentation |
2008-03-07 13:40
A Key Issue for MBWA Systems (1)
-- Field Trial of OFDMA system -- Hiroshi Oguma (ITIm), Noboru Iizuka, Yasuyoshi Asano, Yoshiharu Yamazaki (Softbank Telecom), Suguru Kameda, Hiroyuki Nakase, Tadashi Takagi, Kazuo Tsubouchi (Tohoku Univ.) WBS2007-105 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
For mobile broadband wireless access (MBWA) field trials in urban area of Sendai city, we adopt Fast Low-latency Access with Seamless Hand-off Orthogonal Frequency Division Multiplexing (FLASH-OFDM) system based on Orthogonal Frequency Division Multiple Access (OFDMA). There are 3 cells in the field trial area. Measurement results show that downlink throughput performance is significantly degraded from 2Mbit/s to 1Mbit/s and cumulative distribution of measured signal-to-interference-and-noise ratio (SINR) is impaired about 7dB due to inter-sector interference and inter-cell interference. Since sectorization is mandatory for deployment and operation of the MBWA systems in reuse factor of 1, inter-sector interference reduction is a key issue for systems with same frequency band allocated to all cells and sectors in order to attain high spectral efficiency. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Orthogonal Frequency Division Multiple Access (OFDMA) / inter-sector interference / inter-cell interference / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 107, no. 520, WBS2007-105, pp. 5-10, March 2008. |
Paper # |
WBS2007-105 |
Date of Issue |
2008-02-29 (WBS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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WBS2007-105 |