Abstract
This paper presents the fast cell search time performance based on laboratory and field experiments of a 2step cell search algorithm that uses scrambling code masking for inter-cell asynchronous wideband DS-CDMA (W-CDMA) mobile radio. The scrambling code is masked at different time positions during each scrambling period on the forward-link common control channel (CCH) to detect the scrambling code timing at the mobile receiver. Experiments were conducted using the CCHto-dedicated traffic channel (DTCH) power ratio, R of 3 dB, 10 DTCHs, and 10 scrambling codes in a single-cell and two-cell models. The field experimental results show that the cell search time of about 600 msec was achieved in vehicular environments at the detection probability of 90% and the average received E^/No (No is the background noise without interference) of 13-15 dB for DTCH, even in the worst case scenario when the received signal power ratios of the CCH from two cell sites were 0 dB. The cell search time that was achieved with the 3-step cell search algorithm previously proposed by the authors is estimated from the experimental results; the cell search can be accomplished within about 720 msec at a probability of 96% for 512 scrambling codes and 16 scrambling code groups.
Original language | English |
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Pages (from-to) | 2102-2108 |
Number of pages | 7 |
Journal | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences |
Volume | E83-A |
Issue number | 11 |
Publication status | Published - 2000 Jan 1 |
Externally published | Yes |
Keywords
- Cell search
- DSCDMA
- Inter-cell asynchronous system
- Mobile radio
ASJC Scopus subject areas
- Signal Processing
- Computer Graphics and Computer-Aided Design
- Electrical and Electronic Engineering
- Applied Mathematics