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CDMA signature code design for future wireless applications

Abstract
For reducing the interference of multi-path and multi-user access, we propose to design a spreading code with ideal auto-correlation and cross-correlation. In this paper, we will introduce a code with ideal auto-correlation and cross-correlation.
Recently, there has been great interest in applying zero correlation spreading codes to reduce interference of different users or their multi-path.
The set of sequences having zero auto-correlation and cross-correlation plays an important part in typical DS-CDMA systems. A periodic sequence with zero out-of-phase auto-correlation is called a perfect or an orthogonal sequence, it can mitigate the multi-path interference. Similarly, a set of periodic sequences with zero cross-correlation values is called a set of uncorrelated sequences. However, it is impossible to be found in single sequence spreading code.
In this paper, we propose a new code for ideal auto-correlation and cross-correlation, and the code set size is equal to the number of flock size.

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0804103-235607
Date04 August 2003
CreatorsChu, Shin-Wei
ContributorsChin-Der Wann, Hsiao-Hwa chen, Rung-Hung Gau, Chao-Tang Yu
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804103-235607
Rightswithheld, Copyright information available at source archive

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