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31139

VLSI DESIGN OF DIGITAL CORRELATORS FOR GPS RECEIVERS

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Last updated: 04 Jan 2025

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Abstract

ABSTRACT
There are an increasing number of applications requiring precise relative position and clock-offset information. The Global Positioning System has demonstrated precise and drift free position and timing information using Code-Division-Multiple-Access (CDMA) spread spectrum technology. From the most interesting applications are the navigation and guidance, they are severely needed in the aviation field. .Detecting this accurately with no aid or dependence on anybody is an achieving step towards increasing the safety factors in the plane flights besides many other applications.
This paper explores the GPS system as a whole, then targets to a certain objective. The main objective is to make a VLSI design and implementation for the main digital baseband block in the GPS receiver, the Digital Correlator. We designed 3 architectures, which are the serial, parallel and hybrid Correlators. Each of the serial and the parallel has pros & cons, which are discussed in details. There is a trade-off between the preferred small chip area and the quick response of the GPS receiver to its related stimulus. We finally reached to an optimized design gathering some advantages of both of them, the hybrid correlator. Using Mentor Graphics tools, the design is implemented in ASIC layout and FPGA chip.

DOI

10.21608/asat.2001.31139

Keywords

Global Positioning system, VLSI, guidance, navigation, Aviation Electrical systems, GPS Receiver, Digital Correlator, ASIC, and FPGA

Authors

First Name

Bahnas

Last Name

M.

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Affiliation

IC Design Consultant, Mentor Graphics Egypt, Cairo, Egypt.

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First Name

Al-Imam

Last Name

M.

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Affiliation

Graduate, Electronics & Communications Engineering Dept., Ain Shams Univ., Egypt.

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First Name

Regale

Last Name

F.

MiddleName

H.

Affiliation

Professor, Electronics & Communications Engineering Dept., Ain Shams Univ., Egypt.

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Volume

9

Article Issue

ASAT Conference, 8-10 May 2001

Related Issue

4547

Issue Date

2001-05-01

Receive Date

2019-05-06

Publish Date

2001-05-01

Page Start

1

Page End

17

Print ISSN

2090-0678

Online ISSN

2636-364X

Link

https://asat.journals.ekb.eg/article_31139.html

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https://asat.journals.ekb.eg/service?article_code=31139

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61

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Original Article

Type Code

737

Publication Type

Journal

Publication Title

International Conference on Aerospace Sciences and Aviation Technology

Publication Link

https://asat.journals.ekb.eg/

MainTitle

VLSI DESIGN OF DIGITAL CORRELATORS FOR GPS RECEIVERS

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Article

Created At

22 Jan 2023