Invention Grant
US09564963B2 Automatic power control system for a code division multiple access (CDMA) communications system
有权
用于码分多址（CDMA）通信系统的自动功率控制系统
- Patent Title: Automatic power control system for a code division multiple access (CDMA) communications system
- Patent Title (中): 用于码分多址（CDMA）通信系统的自动功率控制系统
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Application No.: US12340939Application Date: 2008-12-22
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Publication No.: US09564963B2Publication Date: 2017-02-07
- Inventor: Gary R. Lomp , Faith M. Ozluturk , John Kowalski
- Applicant: Gary R. Lomp , Faith M. Ozluturk , John Kowalski
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: US DE Wilmington
- Agency: Volpe and Koenig, P.C.
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04B7/26 ; H04B1/707 ; H04B1/7075 ; H04B1/708 ; H04B1/7085 ; H04B1/709 ; H04B1/7093 ; H04B1/711 ; H04J13/00 ; H04J13/10 ; H04L25/02 ; H04L27/20 ; H04L27/233 ; H04W52/04 ; H04W52/08 ; H04W52/14 ; H04W52/24 ; H04W52/32 ; H04W52/34 ; H04W52/36 ; H04W52/50 ; H04W52/52 ; H04W52/54 ; G06F13/374 ; H03H17/02 ; H04L5/14 ; H04N1/00 ; H04N1/333 ; H04B1/7115 ; H04B1/712 ; H04J13/12 ; H04L1/00 ; H04W52/26 ; H04W52/44 ; H04W52/60 ; H03H17/06 ; H04B1/7077 ; H04J13/16
Abstract:
A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.
Public/Granted literature
- US20090103508A1 AUTOMATIC POWER CONTROL SYSTEM FOR A CODE DIVISION MULTIPLE ACCESS (CDMA) COMMUNICATIONS SYSTEM Public/Granted day:2009-04-23
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