Pulse or digital communications – Receivers – Automatic frequency control
Patent
1997-06-13
1999-11-23
Pham, Chi H.
Pulse or digital communications
Receivers
Automatic frequency control
4551822, H04L 2706
Patent
active
059913444
ABSTRACT:
Provides a mobile communication device and a method for setting an AFC initial value which enables the transmission of required frequency signals even when there is no received signal as during inspections of mobile communication device performance such as technical standards conformance certification. Makes it possible to input an established frequency signal that includes a unique word into the mobile communication device as a received signal, to store a frequency offset value detected by an automatic frequency control function when the unique word included in this established frequency signal is detected in the mobile communication device, and to transmit a more accurate frequency signal when testing the performance of the mobile communication device by controlling the automatic frequency control function so that this stored frequency offset value is treated as an initial value.
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patent: 5727027 (1998-03-01), Tsuda
Fujii Hironori
Sato Hiroshi
Shiina Hayato
Bayard Emmanuel
Kabushiki Kaisha Toshiba
Pham Chi H.
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