WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, RADAR DETECTION CIRCUIT, AND RADAR DETECTION METHOD USED THEREFOR

WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, RADAR DETECTION CIRCUIT, AND RADAR DETECTION METHOD USED THEREFOR

PROBLEM TO BE SOLVED: To provide a radar detection circuit detecting a radar at all times almost without degrading a communication efficiency. SOLUTION: A radar threshold value comparison circuit 141 compares a radar threshold value a or (a) radar threshold value (b) from a radar threshold value (a)...

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1. Verfasser: TSURUNO MAKOTO
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
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description PROBLEM TO BE SOLVED: To provide a radar detection circuit detecting a radar at all times almost without degrading a communication efficiency. SOLUTION: A radar threshold value comparison circuit 141 compares a radar threshold value a or (a) radar threshold value (b) from a radar threshold value (a) latch circuit 142 or a radar threshold value (b) latch circuit 143 selected by a radar selector 144 receiving a radar threshold value selection signal from a reception control circuit 13 with an output of a power calculation / moving average circuit 12. A radar time circuit 145 discriminates whether a radar timer operation is to be started on the basis of an output from the radar threshold value comparison circuit 141 and a radar timer start enable signal from the reception control circuit 13. A radar detection discrimination circuit 146 discriminates the presence / absence of radar detection depending on the output of the radar threshold value comparison circuit 141 and a state of the radar timer circuit 145, and outputs a radar detection high-order notice signal to a high-order layer of the communication protocol at the discrimination of radar detection. COPYRIGHT: (C)2006,JPO&NCIPI
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
WIRELESS COMMUNICATIONS NETWORKS
title WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, RADAR DETECTION CIRCUIT, AND RADAR DETECTION METHOD USED THEREFOR
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