One chip demodulator using RF front-end saw correlator for 2.4 GHz asynchronous spread spectrum modem

H. Nakase, T. Kasai, Y. Nakamura, K. Masu, K. Tsubouchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

A new compact 2.4 GHz spread spectrum (SS) modem has been implemented using a surface acoustic wave (SAW) correlator. We have designed and fabricated the 2.4 GHz SAW correlator on AlN/Al,O, combination, Using the SAW correlator and SAW delay line at RF front-end, 2.4 GHz SS signal is directly demodulated to baseband data. The PN code used is ll-chip Barker code whose rate is 22 MHz, and baseband data rate is 2 Mbps. The degradation of the measured BER from the theoretical limit is found to be less than 3 dB of E,,/N, We propose a time division multiplex scheme utilizing the orthogonality of the spreading PN code in the time domain. The channel multiplex is experimentally confirmed using shifted Barker codes.

Original languageEnglish
Title of host publicationWireless Networks - Catching the Mobile Future
Subtitle of host publication5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994 - Proceedings
EditorsJens C. Arnbak, Jos H. Weber, Ramjee Prasad
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages374-378
Number of pages5
ISBN (Electronic)9051991932
DOIs
Publication statusPublished - 1994
Event5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994 - The Hague, Netherlands
Duration: 1994 Sep 181994 Sep 22

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume1

Conference

Conference5th IEEE Intemational Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 1994
CountryNetherlands
CityThe Hague
Period94/9/1894/9/22

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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