Title :
A coherent demodulator for fast-frequency-hopping-spread-spectrum signal employing an adaptive algorithm
Author :
Takakusaki, Keiji ; Nakagawa, Masao
Author_Institution :
Dept. of Electr. Eng., Keio-gijuku Univ., Yokohama, Japan
Abstract :
The authors propose a coherent demodulator for a fast-frequency-hopping (FFH)-spread-spectrum signal in a frequency selective fading channel, which has been considered impossible to realize, employing a method in which the received signal is noncoherently downconverted and phase-adjusted by an adaptive algorithm. Computer-simulation shows that the proposed system brings great improvement to bit-error-ratio performance
Keywords :
adaptive signal processing; demodulators; fading; frequency hop communication; spread spectrum communication; adaptive algorithm; bit-error-ratio performance; coherent demodulator; fast-frequency-hopping-spread-spectrum signal; frequency selective fading channel; noncoherent downconversion; phase adjustment; Adaptive algorithm; Binary phase shift keying; Demodulation; Envelope detectors; Fading; Frequency synthesizers; Narrowband; Phase modulation; Signal generators; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1993., 43rd IEEE
Conference_Location :
Secaucus, NJ
Print_ISBN :
0-7803-1267-8
DOI :
10.1109/VETEC.1993.507489
