NDLI: PN code acquisition technique with an adaptive dwell time in DS-SS system

Content Provider	IEEE Xplore Digital Library
Author	Hyobeen Park Seongjoo Lee
Copyright Year	2015
Description	Author affiliation: Dept. of Inf. & Commun. Eng., Sejong Univ., Seoul, South Korea (Hyobeen Park; Seongjoo Lee)
Abstract	This paper proposes an algorithm that improves the mean code acquisition time using an energy estimation mode (EEM) and dwell time values from direct-sequence spread spectrum (DS-SS) System. Until recently, DS-SS System has been used in many areas from Wireless LAN, cellular phone, and GPS to telecommunication. Meanwhile, the development of reducing of pseudonoise (PN) code acquisition time, the core technique of DS-SS system, is continuously explored. The algorithm in this paper added the EEM before a search mode (SM) from the conventional PN code acquisition system, which is composed of a SM and a verification mode (VM). In the EEM, dwell time and threshold values are determined for use in the SM and the VM depending on the correlation energy. This paper applies the proposed technique under Rayleigh-fading channel in performing a simulation of PN code acquisition time by a mathematical modeling to evaluate the proposed algorithm. Numerical results show that the proposed method improves the detection performance and the rejection performance of false code phases not only in the VM but also in the SM. Furthermore, the proposed algorithm reduces the mean code acquisition time by maximum 29% than the conventional algorithm.
Starting Page	341
Ending Page	345
File Size	345357
Page Count	5
File Format	PDF
ISBN	9789532900569
DOI	10.1109/SOFTCOM.2015.7314113
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-16
Publisher Place	Croatia
Access Restriction	Subscribed
Rights Holder	University of Split, FESB
Subject Keyword	Correlation Energy measurement Direct-sequence spread spectrum (DS-SS) mean acquisition time Correlators energy estimation mode (EEM) Synchronization Multiaccess communication Mathematical model adaptive dwell time Signal to noise ratio
Content Type	Text
Resource Type	Article

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