Radio wave measuring apparatus for digital communication system

Pulse or digital communications – Testing – With indicator

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375224, 455 671, 455 677, 4552261, 4552264, 455566, H04J 300

Patent

active

058258175

ABSTRACT:
In one aspect of this invention, a receiver sequentially demodulates sequentially received burst signals into original digital data signals. A data extraction unit extracts base station information from the digital data signals sequentially demodulated by the receiver. A level detector detects the signal levels of received signals containing the burst signals sequentially received by the receiver. A control unit causes a display unit to display the signal levels detected by the level detector in accordance with elapse of the reception time, and display the base station information extracted by the data extraction unit. In another aspect of this invention, a determination unit quantitatively determines errors of the burst signals from the digital data signals sequentially demodulated by the receiver, and outputs the determination results concerning the validity of the digital data contained in the burst signals. The data processing unit causes the display unit to display the measurement levels and the determination results concerning the validity of the data for designated base stations.

REFERENCES:
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"Personal Digital Cellular Telecommunication System RCR Standard"; Apr. 1991; p. 30; RCR STD-27C (Fascile 11);
"Personal Handy Phone System"; Dec. 1993; RCR STD-28 and its Japanese version.
"Adaptive Carrier Tracking (ACT) Demodulation LSI NLC 5010 F"; NTT Electronics Technology Corporation (Tokyo, Japan).
"64-bit Digital Correlator L10C23", Logic Devices Incorporated; Dec. 1993; pp. 3-45 through 3-51.

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