Communication control unit for mobile communication systems and

Details Communication control unit for mobile communication systems and Communication control unit for mobile communication systems and

1996-10-22

1998-08-25

Vo, Nguyen

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

455 62, 455 673, 4552261, H04B 110, H04B 1500

Patent

active

057992428

ABSTRACT:
A communication control unit in accordance with the present invention comprises a channel quality detection unit that includes a differential block for calculating a double differential phase by performing a plurality of times differential on a received signal and a signal lagging behind the received signal by a predetermined time, a frequency calculation block for calculating a frequency by which the double differential phase falls into a pseudo-error area within a predetermined observation time, and a quality index calculation block for calculating an index of the quality of a channel on the basis of an output of the frequency calculation block, and that calculates an index of the quality of a channel employed using a received signal, a quality decision unit for deciding from the result of channel quality index calculation performed on the channel employed which is provided by the channel quality detection unit whether or not a channel is good, a control unit for controlling the channel according to the result of channel quality decision which is provided by the quality decision unit. Consequently, the communication control unit can achieve channel control successfully.

REFERENCES:
patent: 4977612 (1990-12-01), Wilson
patent: 5297186 (1994-03-01), Dong
patent: 5323421 (1994-06-01), LaRosa et al.
patent: 5471671 (1995-11-01), Wang et al.
patent: 5506869 (1996-04-01), Royer

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