作者: Robert Regis , Michael Luddy , Avi Silverberg , John Kowalski , Alexander Jacques
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摘要: A MULTIPLE ACCESS, SPREAD-SPECTRUM COMMUNICATION SYSTEM PROCESSES PLURALITY OF INFORMATION SIGNALS RECEIVED BY RADIO CARRIER STATION (RCS) OVER TELECOMMUNICATION LINES FOR SIMULTANEOUS TRANSMISSION FREQUENCY (RF) CHANNEL AS CODE-DIVISION-MULTIPLEXED (CDM) SIGNAL TO GROUP SUBSCRIBER UNITS (SUS). THE RCS RECEIVES CALL REQUEST THAT CORRESPONDS LINE SIGNAL, AND USER IDENTIFICATION IDENTIFIES RECEIVE CALL. INCLUDES CODE DIVISION ACCESS (CDMA) MODEMS, ONE WHICH PROVIDES GLOBAL PILOT SIGNAL. MODEMS PROVIDE MESSAGE SYNCHRONIZED EACH COMBINES AN WITH CDM PROCESSED SIGNAL.THE CONTROLLER COUPLED REMOTE RF TRANSMITTER IS CONNECTED ALL COMBINE ALSO MODULATES TRANSMITS MODULATED THROUGH SUS.EACH SU CDMA MODEM DESPREADS DESPREAD USER.THE CLOSED LOOP POWER CONTROL MAINTAINING MINIMUM TRANSMIT LEVEL SUS, CAPACITY MANAGEMENT MAXIMUM NUMBER ACTIVE SUS IMPROVED PERFORMANCE.(FIG 1)