| 摘要 |
PURPOSE: A method capable of improving a performance of a communication system by distinguishing fading error frequency channel selected in a form of a frequency for a long time due to a circumstance feature such as a multiple path fading and error frequency channels according to a JAM signal from other channels and excluding it and performing a communication operations, is provided. CONSTITUTION: The method for removing error channels according to JAM and multiple path fading, the method comprising the steps of: preparing a plurality of first test data which are possible to check errors and divide channel; transmitting and receiving the plurality of first test data from a plurality of terminal devices; storing the received data in a memory, detecting error data included in the stored data, and dividing a channel that an error is generated; forming an MAP based on the error channel information obtained by each terminal device; judging an error channel due to the JAM signal from the MAP, and removing the error channel from a total division frequency channel; dividing error channels from data which are firstly measured and preparing a plurality of second test data, repeating the above steps by using the plurality of second test data after a predetermined time lapses; judging error channels other than the JAM detected n the repeating steps as a structural multiple path error channel; and removing error channels faded due to a structural frequency multiple path feature from the total division frequency channel.
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