Title :
Design and analysis of a jitter-free clock recovery scheme for QAM systems
Author :
D´Andrea, Nunzio Aldo ; Luise, Marco
Author_Institution :
Dept. of Inf. Eng., Pisa Univ., Italy
fDate :
9/1/1993 12:00:00 AM
Abstract :
Performance of the digital clock recovery scheme proposed by F.M. Gardner (1986), when applied to quadrature-amplitude-modulation (QAM) microwave radio communication systems is investigated. In particular, it is shown how to improve such a scheme by means of appropriate prefiltering of the incoming signal. The impulse response of the shaping filter is designed to achieve pattern-jitter-free clock recovery in the case of an ideal transmission channel. The impact of multipath fading on synchronizer performance is evaluated by means of computer simulation
Keywords :
amplitude modulation; fading; filtering and prediction theory; radio receivers; signal processing; synchronisation; QAM systems; computer simulation; design; ideal transmission channel; impulse response; incoming signal; jitter-free clock recovery; microwave radio communication systems; multipath fading; prefiltering; quadrature-amplitude-modulation; radio receiver; shaping filter; signal processing; synchronizer performance; Clocks; Detectors; Equations; Fading; Frequency synchronization; Pulse modulation; Quadrature amplitude modulation; Signal processing algorithms; Steady-state; Timing;
Journal_Title :
Communications, IEEE Transactions on
