Presentation 2004/7/15
On a Novel DLL Using a Code-Orthogonalizing Filter for DS/CDMA Tracking
Yuuki Hori, Shin-ichi Tachikawa, Masanori Hamamura,
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Abstract(in English) In this paper, we propose a novel delay-lock loop (DLL) using a code-orthogonalizing filter (COF) which suppresses multiple access interference (MAI) in an asynchronous DS/CDMA. The DLL tracks the chip clock fluctuation of the own pseudo-noise (PN) sequence, however, the clock jitter increases by MAI in DS/CDMA. While, the COF can suppress MAI, however, the effect is degraded when the jitter increases, and bit error rate (BER) performance is degraded. By combining both the circuits, the preferable DLL and COF circuits can be realized A configuration of the proposed system is presented, and performance improvements of jitter and BER are shown.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) DS/CDMA / tracking / delay-locked loop (DLL) / code-orthonalizing filter (COF) / clock jitter / multiple access interference (MAI) / bit error rate (BER)
Paper # SIP2004-34,WBS2004-15
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Committee WBS
Conference Date 2004/7/15(1days)
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Registration To Wideband System(WBS)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) On a Novel DLL Using a Code-Orthogonalizing Filter for DS/CDMA Tracking
Sub Title (in English)
Keyword(1) DS/CDMA
Keyword(2) tracking
Keyword(3) delay-locked loop (DLL)
Keyword(4) code-orthonalizing filter (COF)
Keyword(5) clock jitter
Keyword(6) multiple access interference (MAI)
Keyword(7) bit error rate (BER)
1st Author's Name Yuuki Hori
1st Author's Affiliation Department of Electrical Engineering, Nagaoka University of Technology()
2nd Author's Name Shin-ichi Tachikawa
2nd Author's Affiliation Department of Electrical Engineering, Nagaoka University of Technology
3rd Author's Name Masanori Hamamura
3rd Author's Affiliation Department of Information Systems Engineering, Kochi University of Technology
Date 2004/7/15
Paper # SIP2004-34,WBS2004-15
Volume (vol) vol.104
Number (no) 216
Page pp.pp.-
#Pages 5
Date of Issue