FIELD: radio engineering; communication systems.
SUBSTANCE: proposed method and device are characterized in estimation of signal position in time involving two phases. First phase includes generation of decision function with wide friendly response to enhance probability of adequate signal detection. Second phase includes generation of decision function with narrow friendly response to provide for accurate estimate of signal position in time. Shaping frequency shift estimate also involves two phases, validity of this estimate being very high as it is based on high-reliable estimate of signal position in time. One more characteristic of proposed method and device is capability of synchronization at relatively high initial values of frequency shift which is inaccessible for most known methods and devices for time-and-frequency synchronization.
EFFECT: enhanced noise immunity of communication system time-and-frequency synchronization.
8 cl, 8 dwg
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