|発明の名称||INTERFERENCE ELIMINATION SYSTEM AND DEVICE BY MAXIMUM CORRELATION VALUE PATTERN DETECTION|
PROBLEM TO BE SOLVED: To provide an interference signal eliminating method for achieving performance improvement by eliminating the need of prior information for reception, simplifying a device and shortening a processing time in communication using a spread code system such as a spread spectrum multiple access (SSMA) system and a code division multiple access (CDMA) system.
SOLUTION: A synchronous circuit that can grasp spread codes and receiving levels of the whole signals during synchronous communication is used to prepare all combination patterns of an interference signal corresponding to data change. Since a combination patten in which a received signal coincides with an interference signal obtains the largest correlation value in the case of obtaining the correlation of a combination pattern between a received signal and an interference signal, the maximum correlation value is detected to thereby determine a signal obtained in the combination of the maximum correlation value as an interference signal. The determined interference signal is subtracted from the received signal to thereby eliminate interference. According to the invention, a receiver is simplified and the improvement of communication quality and the improvement of communication capacity are simultaneously attained.
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