Title:
【発明の名称】CDMAモデム
Document Type and Number:
Japanese Patent JP3478342
Kind Code:
B2
Abstract:
The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.
Inventors:
Romp, Gerry
Ozur talc, fati
Silverberg, Abi
Ozur talc, fati
Silverberg, Abi
Application Number:
JP50523097A
Publication Date:
December 15, 2003
Filing Date:
June 27, 1996
Export Citation:
Assignee:
Inter Digital Technology Corporation
International Classes:
H03K3/84; G06F13/374; H03H17/02; H04B1/707; H04B1/7075; H04B1/708; H04B1/7085; H04B1/709; H04B1/7093; H04B1/711; H04B7/005; H04B7/216; H04B7/26; H04B15/00; H04B17/00; H04J13/00; H04J13/10; H04K1/00; H04L1/00; H04L5/14; H04L7/00; H04L7/033; H04L25/02; H04L27/20; H04L27/233; H04L27/30; H04N1/333; H04W52/04; H04W52/14; H04W52/24; H03H17/06; H04B1/7077; H04B1/7115; H04B1/712; H04J11/00; H04J13/12; H04J13/16; H04L27/00; (IPC1-7): H04J13/04
Other References:
【文献】米国特許5416797(US,A)
【文献】西独国特許出願公開3743731(DE,A1)
【文献】国際公開95/005037(WO,A1)
【文献】西独国特許出願公開3743731(DE,A1)
【文献】国際公開95/005037(WO,A1)
Attorney, Agent or Firm:
Susumu Uchihara