Title:
非活性時の送受信局の消費電力を節約したスペクトラム拡散通信システム
Document Type and Number:
Japanese Patent JP4751945
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
John Kowalski
Ozur Talc, Fatih
John Kowalski
Ozur Talc, Fatih
Application Number:
JP2009176814A
Publication Date:
August 17, 2011
Filing Date:
July 29, 2009
Export Citation:
Assignee:
Interdigital Technology Corporation
International Classes:
H03K3/84; H04W52/50; 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; H04W52/30; H03H17/06; H04B1/7077; H04B1/7115; H04B1/712; H04J11/00; H04J13/12; H04J13/16; H04L27/00
Domestic Patent References:
| JP6501349A | ||||
| JP6504179A | ||||
| JP2000510655A | ||||
| JP7095151A | ||||
| JP7075154A | ||||
| JP6268574A | ||||
| JP7030483A | ||||
| JP6511609A | ||||
| JP7502398A |
Foreign References:
| WO1995015038A1 | ||||
| WO1995008876A1 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe