High Frequency Delay for Code Division Multiple Access (CDMA) Digital Cellular Mobile Communications

摘要

1. TECHNICAL FIELD OF THE INVENTION;High Frequency Delay Device for CDMA Digital Cellular Mobile Communication;2. The technical problem to be solved by the invention;In the conventional CDMA digital cellular system, it is intended to solve the problem of deterioration of call quality and increase of installation space and installation cost due to the use of multiple antennas in implementing a space diversity time delay method using two antennas.;3. Summary of Solution to Invention;Distribution means for separating the high frequency received from the antenna into two high frequencies; High frequency delay means for delaying and outputting the high frequency separated by the distribution means by a predetermined time; Amplifying means for amplifying and outputting a high frequency delayed by the high frequency delay means to a predetermined level; And a frequency mixing means for mixing the high frequency amplified by the amplifying means and the high frequency separated by the distribution means to output the received high frequency.;4. Important uses of the invention;It is applied to relay data communication between base station and terminal in CDMA digital cellular mobile communication system.