Time spread modulation system for land mobile radio communications

Author

Kato, Eiji ; Sasaoka, Hideichi

Author_Institution

Nat. Police Agency, Tokyo, Japan

fYear

1991

fDate

19-22 May 1991

Firstpage

560

Lastpage

565

Abstract

A novel time spread modulation (TSM) scheme which uses the time diversity effect is presented. Several modifications are proposed to the standard TSM scheme to allow it to be used in land mobile radio communications. Quadrature amplitude modulation with fading compensation is applied to increase the spectral efficiency. Symbol interleave and maximum likelihood estimation are applied to improve TSM performance under Rayleigh fading conditions. Computer simulation shows that the proposed TSM scheme can provide a large process gain in land mobile radio communications

Keywords

amplitude modulation; diversity reception; fading; mobile radio systems; QAM; Rayleigh fading; TSM performance; fading compensation; land mobile radio communications; large process gain; maximum likelihood estimation; quadrature amplitude modulation; spectral efficiency; symbol interleave; time diversity effect; time spread modulation; Bandwidth; Bit error rate; Computer simulation; Diversity methods; Hardware; Land mobile radio; Mobile communication; Rayleigh channels; Signal processing; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE

Conference_Location

St. Louis, MO

ISSN

1090-3038

Print_ISBN

0-87942-582-2

Type

conf

DOI

10.1109/VETEC.1991.140554

Filename

140554