| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an improved system drastically reducing an ISI (Inter-Symbol Interface) and a MAI (Multiple Access Interference) in a FH-CDMA (Frequency Hopping-Code Division Multiple Access). <P>SOLUTION: In the frequency-hopping type CDMA communication system in which a transmitter side and a receiver side switch communication frequencies according to a fixed hopping pattern to perform communication, the receiver is composed of adaptive filters having a filter coefficient made to two-dimensionally correspond in time and frequency, and the receiver repeatedly feeds back a portion of the filter coefficient to the transmitter. In a hopping pattern feedback type CDMA communication system, the transmitter uses a portion of the fed-back filter coefficient as a new hopping pattern. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
