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.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0804103-235607 |
| Date | 04 August 2003 |
| Creators | Chu, Shin-Wei |
| Contributors | Chin-Der Wann, Hsiao-Hwa chen, Rung-Hung Gau, Chao-Tang Yu |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0804103-235607 |
| Rights | withheld, Copyright information available at source archive |
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