In this paper, radio propagation in subway platform and tunnel was investigated at 2.5 GHz band. Propagation loss and fading characteristics are measured by placing a transmitter on the platform and by moving receivers on the platform as well as in the tunnel. The results of propagation in line-of-sight on the platform could be well explained with a propagation model using direct wave and one-time reflected waves from the ground, the ceiling and sidewalls. The calculated loss including fading phenomena agreed well with the experimental result: loss factor with distance is 1.3, which is considerably lower than 2.0, the free space propagation factor. Propagation loss in the tunnel increases suddenly beyond a corner, where no direct-wave is found. In the subway environment, the results for space diversity reception shows the diversity is not so much effective at a long distance in the line-of-sight areas, and it is effective in the out-of-sight areas.
|出版ステータス||出版済み - 12 1 1995|
|イベント||Proceedings of the 1995 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'95. Part 3 (of 3) - Toronto, Can|
継続期間: 9 27 1995 → 9 29 1995
|その他||Proceedings of the 1995 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'95. Part 3 (of 3)|
|Period||9/27/95 → 9/29/95|
All Science Journal Classification (ASJC) codes