H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 29/02 (2006.01) H04B 17/00 (2006.01) H04L 1/20 (2006.01) H04L 1/24 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2188204
A communication control unit in accordance with the present invention comprises a channel quality detection unit, 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. The channel quality detection unit includes a differential block for calculating a double differential phase by performing subtraction, a plurality of times, 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. Consequently, the communication control unit can achieve channel control successfully.
Marks & Clerk
Mitsubishi Denki Kabushiki Kaisha
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