Title :
Cycle slip in clock recovery on frequency-selective fading channels
Author :
Karasawa, Yoshio ; Kuroda, Tomonori ; Iwai, Hisato
Author_Institution :
KDD Res. & Dev. Labs., Saitama, Japan
fDate :
3/1/1997 12:00:00 AM
Abstract :
The mechanism and fundamental nature of the “cycle slip phenomenon” in clock recovery, which triggers the occurrence of burst-type irreducible errors in frequency-selective fading conditions, are theoretically clarified for PSK transmission systems with a coherent detection scheme. The appropriateness of the theory is identified through measurement by means of a fading simulator and a 64 kb/s QPSK modem. Moreover, a simple formula for predicting the frequency of cycle slip occurrence in Rayleigh-fading environments is developed, the accuracy of which is confirmed by means of computer simulation
Keywords :
Rayleigh channels; digital radio; fading; land mobile radio; multipath channels; quadrature phase shift keying; signal detection; synchronisation; 64 kbit/s; PSK transmission systems; QPSK modem; Rayleigh-fading environments; burst-type irreducible errors; clock recovery; coherent detection scheme; computer simulation; cycle slip; fading simulator; frequency-selective fading channels; mobile radio; wave propagation; Clocks; Computational modeling; Computer simulation; Frequency; Frequency-selective fading channels; Land mobile radio; Phase shift keying; Rayleigh channels; Signal analysis; Timing;
Journal_Title :
Communications, IEEE Transactions on
