Proposal of a skipped M-sequence spread spectrum communication system

Author

Kuroyanagi, Noriyoshi ; Takahashi, Masakazu

Author_Institution

Tokyo Eng. Univ., Japan

fYear

1994

fDate

2-5 Oct 1994

Firstpage

139

Abstract

Conventional direct sequence spread spectrum systems use M-sequence as the spreading code. From the viewpoint of avoiding the disturbance caused by colored noise in natural environment, a new receiver system called skipped M-sequence demodulation (SMD) is proposed. It is possible to modify the frequency characteristics of demodulated output to be applied to the decision circuit, if certain chips are skipped and some of them are attenuated in the demodulating process. Consequently, colored noise immunity demodulation can be achieved by selecting proper skipping patterns. Some methods of designing proper skipped sequences are also discussed

Keywords

demodulation; noise; pseudonoise codes; receivers; spread spectrum communication; colored noise; colored noise immunity demodulation; decision circuit; direct sequence spread spectrum systems; frequency characteristics; receiver system; skipped M-sequence demodulation; skipped M-sequence spread spectrum communication system; spreading code; Circuits; Colored noise; Demodulation; Design methodology; Feeds; Frequency; Jamming; Proposals; Spread spectrum communication; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1994. MILCOM '94. Conference Record, 1994 IEEE

Conference_Location

Fort Monmouth, NJ

Print_ISBN

0-7803-1828-5

Type

conf

DOI

10.1109/MILCOM.1994.473820

Filename

473820