A new rapid acquisition scheme for burst mode DS spread spectrum packet radio

Author

Driessen, P.F. ; Shi, Z.L.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

fYear

1991

fDate

4-7 Nov 1991

Firstpage

809

Abstract

A rapid acquisition scheme for direct-sequence (DS) spread-spectrum packet radio systems using PN matched filters is described. The system operates in burst mode, with limited permitted time for synchronization using a fixed length preamble at the beginning of each data burst. Multiple PN codes are available for acquisition at the first portion of the preamble. The second portion of the preamble consists of several PN codes which are modulated with a marker. The receiver may achieve code acquisition anywhere within the first portion of the preamble. Since it is not known a priori in which of the several code periods acquisition will occur, coincidence detection is done using the marker for frame synchronization. The analysis shows that the scheme yields better performance than some other previous schemes in packet radio systems

Keywords

codes; matched filters; packet switching; spread spectrum communication; PN codes; PN matched filters; burst mode DS spread spectrum; code acquisition; coincidence detection; fixed length preamble; frame synchronization; packet radio systems; rapid acquisition scheme; receiver; Matched filters; Modulation coding; Packet radio networks; Performance analysis; Receivers; Spread spectrum communication; Surface acoustic wave devices; System performance; Throughput; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1991. MILCOM '91, Conference Record, Military Communications in a Changing World., IEEE

Conference_Location

McLean, VA

Print_ISBN

0-87942-691-8

Type

conf

DOI

10.1109/MILCOM.1991.258373

Filename

258373