Title :
Noncoherent FSK receiver using variable threshold level
Author :
Kamitani, T. ; Iritani, T. ; Oie, T. ; Masuda, Koichiro
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokushima Univ., Japan
Abstract :
The authors propose a new noncoherent FSK receiver composed of a second-order bandpass filter (BPF), a first-order digital PLL demodulator and a detection circuit. The authors explain new method, i.e. making threshold level variable corresponding to the previous demodulated data, which decreases intersymbol interference (ISI), and draw the conclusion that the SNR is improved about 2.5 dB
Keywords :
demodulators; detector circuits; frequency shift keying; interference suppression; intersymbol interference; phase-locked loops; radio receivers; ISI reductions; detection circuit; first-order digital PLL demodulator; intersymbol interference; noncoherent FSK receiver; second-order bandpass filter; variable threshold level; Band pass filters; Baseband; Demodulation; Equations; Equivalent circuits; Frequency shift keying; Industrial electronics; Phase locked loops; Pulse modulation; Signal to noise ratio;
Conference_Titel :
Singapore ICCS/ISITA '92. 'Communications on the Move'
Print_ISBN :
0-7803-0803-4
DOI :
10.1109/ICCS.1992.254961
