CDMA TRANSMITTER
申请(专利)号： PT20100182350T
专利号： PT2273689E 主分类号： H03K3/84
申请日： 1996-06-27 公开公告日： 2013-01-31
分类号： H03K3/84;
H04B1/707; G06F13/374; H03H17/02; H03H17/06; H04B1/7075; H04B1/7077; H04B1/708; H04B1/7085; H04B1/709; H04B1/7093; H04B1/711; H04B1/7115; H04B1/712; H04B7/005; H04B7/216; H04B7/26; H04B15; H04B17; H04J11; H04J13; H04J13/10; H04J13/12; H04J13/16; H04K1; H04L1; H04L5/14; H04L7; H04L7/033; H04L25/02; H04L27; H04L27/20; H04L27/233; H04L27/30; H04N1/333; H04W52/04; H04W52/08; H04W52/14;
申请权利人： INTERDIGITAL
TECHNOLOGY CORPORATION
公开国代码： PT 优先权国家： US 摘 要：
A multiple access, spread-spectrum communication system processes a
plurality of information signals received by a Radio Carrier Station (RCS) over
telecommunication lines for simultaneous transmission over a radio frequency (RF) channel as a code-division-multiplexed (CDM) signal to a group of Subscriber Units (SUs). The RCS receives a call request signal that corresponds to a
telecommunication line information signal, and a user identification signal that identifies a user to receive the call. The RCS includes a plurality of Code Division Multiple Access (CDMA) modems, one of which provides a global pilot code signal. The modems provide message code signals synchronized to the global pilot signal. Each modem combines an
H04W52/20; H04W52/24; H04W52/26; H04W52/32; H04W52/34; H04W52/50; H04W52/52
发明设计人： GARY R. LOMP;
AVI SILVERBERG; MICHAEL LUDDY; ALEXANDER MARRA; FATIH M. OZLUTURK;
JOHN KOWALSKI; ROBERT E. REGIS; ALEXANDER JACQUES 申请国代码： PT
优先权： 19950630 US 77595
摘 要 附 图：
information signal with a message code signal to provide a CDM processed signal. The RCS includes a system channel controller coupled to receive a remote call. An RF transmitter is connected to all of the modems to
combine the CDM processed signals with the global pilot code signal to generate a CDM signal. The RF transmitter also modulates a carrier signal with the CDM signal and transmits the modulated carrier signal through an RF communication channel to the SUs. Each SU includes a CDMA modem which is also
synchronized to the global pilot signal. The CDMA modem despreads the CDM signal and provides a despread
information signal to the user. The system includes a closed loop power control
system for maintaining a minimum system transmit power level for the RCS and the SUs, and system capacity management for maintaining a maximum number of active SUs for improved system performance. <IMAGE> 主权项：
CDMA TRANSMITTER
