MULTIPLEXING METHOD USING CODE SELECTION FROM TWO DIFFERENT HADAMARD MATRICES AND APPARATUS FOR FULL RATE CONSTANT AMPLITUDE MULTI-CODE TRANSMISSION IN CDMA COMMUNICATION SYSTEM AND DEVICE THEREOF

摘要

The present invention is a CDMA (CDMA: the following CDMA below in two different orthogonal code characters used by modulated signal) communication system always constant amplitude, to maintain constant amplitude CDMA (CDMA of a binary) multiplexing method, it is related to device, what it is with a feature is, its quantity that can extend up to orthogonal code, using by a kind of channel number for selecting the method for consistent orthogonal code to use, information bit string is entered. ;The constant amplitude in conventional constant amplitude CDMA scheme in order to maintain transmitter, coding method, for being limited by orthogonal code, or use pointer, multi-level being founded by one multiple yard of scheme with constant amplitude of transmission signal level is blocked to transmit signal, the port number that can be used can be the problem that there is the small value of the quantity for orthogonal code transmission rate to reduce compared with time-division mode. ;Same ratio and time-division mode can be transmitted using the present invention, although using a kind of constant amplitude code division method, it being capable of clean radio multimedium satellite broadcasting, reduce transmission rate under the conditions of will not be existing for the multipath fading of a base, one is present in and passes through the length that can be used as a time-division transmission device of code offshoot program and be only opened. ;CDMA, DS/CDMA of binary, PW/CDMA, MP/CDMA, CS/CDMA, HC/CDMA, DH/CDMA, even number /holseong, 2 Hadamard code selection of type, orthogonal code, multiplexing technique, constant amplitude, multiple code