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Evaluation of subjective communication quality of optical mobile communication systems by mean opinion score
http://hdl.handle.net/10228/1524
http://hdl.handle.net/10228/1524fdb105c4-2821-45bd-97f6-b56b6a60ee6f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kuwabara_18.pdf (255.4 kB)
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| アイテムタイプ | 学術雑誌論文 = Journal Article(1) | |||||
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| 公開日 | 2009-02-20 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| タイトル | ||||||
| タイトル | Evaluation of subjective communication quality of optical mobile communication systems by mean opinion score | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 著者 |
Itoh, Y
× Itoh, Y× Tajima, K× 桑原, 伸夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Since mobile communication systems using optical rays (optical mobile communication systems) do not radiate radio waves from the mobile terminals, they are expected to be used in environments containing sensitive electronic equipment. However, the placement and direction of the optical receivers must be suitably determined for mobile communication because light has high directivity. In optical mobile communication systems, the communication quality varies with the direction of the mobile terminal. Therefore. we examined the angle over which communication is possible at various measurement points and defined it as the communication angle. The mean opinion score (MOS) was obtained to assess the communication quality using the communication angle as a parameter. In this paper, the two situations, walking and sitting down, was considered the way optical mobile communication systems actually used. We found that for walking, when the communication angle was over 180 degrees, the MOS was over 3 and over 50% of users could communicate usefully When used sitting down, the communication quality did not depend on the communication angle, but only on whether or nor the user could communicate in the direction he/she was facing. Thus, if th: communication angle in the service area is over 180 degrees, it is possible to communicate in practical situations, even while walking. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : IEICE Transactions on Communications 巻 E83-B, 号 8, p. 1775-1782, 発行日 2000-08-01 |
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| 出版社 | ||||||
| 出版者 | 電子情報通信学会 | |||||
| 言語 | ja | |||||
| NCID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA10826261 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0916-8516 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 1745-1345 | |||||
| 著作権関連情報 | ||||||
| 権利情報 | 社団法人電子情報通信学会 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | mobile communication system | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | optical wireless communication | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | communication quality | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | MOS | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 査読の有無 | ||||||
| 値 | yes | |||||
| 業績ID | ||||||
| 値 | 5C23D01C35203B1149257563001BA43C | |||||
