Direct conversion receiver for 2- and 4-level FSK signals

Author

Saitou, Masaya ; Kawabata, Mika ; Akaiwa, Yoshihiko

Author_Institution

Dept. of Comput. Sci. & Electron., Kyushu Inst. of Technol., Fukuoka, Japan

fYear

1995

Firstpage

392

Lastpage

396

Abstract

Direct conversion (DC) receivers are suitable for integrated circuit implementation. In this report, DC receivers for 2- and 4-level FSK signals are proposed and its BER performance is investigated with computer simulation. For FSK signals, a difference of baseband signal level appears as a difference in a velocity of rotation on IQ-plane. In the proposed circuits, this difference in the velocity is detected with differential circuits and logic circuits such as flip-flop, counter and so on. Performance under frequency offset is also investigated and a compensation method for the frequency offset is proposed

Keywords

compensation; counting circuits; differentiating circuits; flip-flops; frequency shift keying; integrated logic circuits; paging communication; radio receivers; signal detection; 2-level FSK signals; 4-level FSK signals; BER performance; DC receivers; IQ-plane; baseband signal level; compensation method; computer simulation; counter circuit; differential circuits; direct conversion receiver; flip-flop circuit; frequency offset; integrated circuit implementation; logic circuits; pagers; performance; rotation velocity; Baseband; Bit error rate; Computer science; Computer simulation; Detectors; Frequency shift keying; Logic circuits; Modulation; RF signals; Signal detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on

Conference_Location

Tokyo

Print_ISBN

0-7803-2955-4

Type

conf

DOI

10.1109/ICUPC.1995.496928

Filename

496928