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  1. 060 工学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Error Analysis for Ultra-Wideband DS- and Hybrid DS/TH-CDMA with Arbitrary Chip-Duty

http://hdl.handle.net/10191/6199
http://hdl.handle.net/10191/6199
3f9528b4-c3a6-4f42-b7b8-3545f5087fc3
名前 / ファイル ライセンス アクション
1_0005.pdf 1_0005.pdf (616.0 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2008-04-08
タイトル
タイトル Error Analysis for Ultra-Wideband DS- and Hybrid DS/TH-CDMA with Arbitrary Chip-Duty
タイトル
言語 en
タイトル Error Analysis for Ultra-Wideband DS- and Hybrid DS/TH-CDMA with Arbitrary Chip-Duty
言語
言語 eng
キーワード
主題Scheme Other
主題 ultra-wideband
キーワード
主題Scheme Other
主題 code division multiple access
キーワード
主題Scheme Other
主題 error analysis
キーワード
主題Scheme Other
主題 standard and improved Gaussian approximations
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Rahman, Mohammad Azizur

× Rahman, Mohammad Azizur

WEKO 5954

Rahman, Mohammad Azizur

Search repository
Sasaki, Shigenobu

× Sasaki, Shigenobu

WEKO 5955

Sasaki, Shigenobu

Search repository
Kikuchi, Hisakazu

× Kikuchi, Hisakazu

WEKO 5956

Kikuchi, Hisakazu

Search repository
著者別名
識別子 5957
識別子Scheme WEKO
姓名 佐々木, 重信
著者別名
識別子 5958
識別子Scheme WEKO
姓名 菊池, 久和
抄録
内容記述タイプ Abstract
内容記述 In this paper, ultra-wideband (UWB) multiple access systems are introduced by using direct-sequence (DS) and hybrid direct-sequence time-hopping (DS/TH) code division multiple access (CDMA) that use arbitrary chip-duty of the spreading sequences. The bit error probabilities are presented. First of all, the variances of the multiple access interference are developed by investigating the collision properties of the signals. Afterward, various approximations are applied. The standard Gaussian approximation (SGA) for the DS system is shown to become extremely optimistic as the chip-duty becomes low. Though the hybrid system performs better, the SGA still remains optimistic. To obtain accurate results, Holtzman's simplified improved Gaussian approximation (SIGA) and Morrow and Lehnert's improved Gaussian approximation (IGA) are used. A shortcoming of the SIGA is rediscovered that renders it unusable for low-duty DS systems, especially, at high signal-to-noise ratio. However, for the hybrid system, the SIGA works as an excellent tool. The IGA is used to get accurate results for the low-duty DS systems. It is shown that lowering of chip-duty by keeping chip rate and chip length unchanged improves performance for asynchronous DS and both asynchronous and synchronous hybrid systems. However, under the same processing gain, a high-duty system performs better than a low-duty system. Performance of synchronous DS system remains independent of chip-duty.
書誌情報 IEICE transactions on fundamentals of electronics, communications and computer sciences
en : IEICE transactions on fundamentals of electronics, communications and computer sciences

巻 E89-A, 号 6, p. 1668-1679, 発行日 2006-06
出版者
出版者 The Institute of Electronics, Information and Communication Engineers
ISSN
収録物識別子タイプ ISSN
収録物識別子 09168508
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10826239
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1093/ietfec/e89-a.6.1668
権利
権利情報 copyright©2006 IEICE(許諾番号07RB0183)
著者版フラグ
値 publisher
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://www.ieice.org/jpn/trans_online/
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