Title:
符号分割多元接続（ＣＤＭＡ）モデム
Document Type and Number:
Japanese Patent JP5751471
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
Ozultak, Fatih
Silverberg, Abi
Ozultak, Fatih
Silverberg, Abi
Application Number:
JP2011002332A
Publication Date:
July 22, 2015
Filing Date:
January 07, 2011
Export Citation:
Assignee:
Interdigital Technology Corporation
International Classes:
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
Domestic Patent References:
| JP832513A | ||||
| JP837515A | ||||
| JP284832A | ||||
| JP4114521A |
Other References:
A.Baier and H.Panzer,“Multi-rate DS-CDMAradio interface for third-genetation celluar systems”,Mobile and Personal Communications,1993,Seventh IEE European Conference,1993年12月13-15日,pp.255-260
Chih-Lin and Richard D.Gitlin,“Multi-Code CDMA Wireless Personal Communications Networks”,Communications,1995.ICC ’95 Seattle,Gateway to Globalization,1995 IEEE International Conference,1995年6月18-22日,Vol.2,pp.1060-1064
Chih-Lin and Richard D.Gitlin,“Multi-Code CDMA Wireless Personal Communications Networks”,Communications,1995.ICC ’95 Seattle,Gateway to Globalization,1995 IEEE International Conference,1995年6月18-22日,Vol.2,pp.1060-1064
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office
Atsuhiro Hamanaka
Nakanishi Eiichi
Atsuhiro Hamanaka
Nakanishi Eiichi