符号分割多元接続(CDMA)モデム

Japanese Patent JP5438069

B2

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.

JP3565590	SIGNAL GENERATING CIRCUIT
JP4308211	Spread spectrum communication system including base station and subscriber station
JP2000047853	CODE SEQUENCE GENERATOR

Romp, Gerry
Ozultak, Fatih
Silverberg, Abi

JP2011129285A

March 12, 2014

June 09, 2011

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Interdigital Technology Corporation

H03K3/84; H04J13/00; 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; H04J13/10; 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

JP2042500A
JP63023425A
JP5235906A
JP2011103689A

WO1993021707A1

Alfred Baier et al.,Design Study for a CDMA-Based Third-Generation Mobile Radio System,IEEE Journal on selected areaa in Communications,1994年 5月,Vol.12 No.4,pp.733-743
加藤 修三 外3名,パーソナル通信における音声品質改善法,1995年電子情報通信学会総合大会講演論文集,1995年 3月10日,通信1,p.513,B-513

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