Invention Grant
- Patent Title: Radio communications using scheduled power amplifier backoff
- Patent Title (中): 使用调度功率放大器回馈的无线电通信
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Application No.: US11711837Application Date: 2007-02-28
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Publication No.: US07797013B2Publication Date: 2010-09-14
- Inventor: Ulf Skarby , Karl-Gosta Sahlman
- Applicant: Ulf Skarby , Karl-Gosta Sahlman
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Nixon & Vanderhye P.C.
- Main IPC: H04B7/00
- IPC: H04B7/00

Abstract:
Radio transmissions to multiple radio terminals are improved using scheduled backoff of a multi-signal power amplifier. A radio channel quality associated with each of the radio terminals is determined. First signals for first radio terminals associated with a better channel quality are amplified by a power amplifier during a first time period resulting in a first composite output signal. Second signals for second radio terminals associated with a lower channel quality are amplified by the power amplifier during a second time period resulting in a second composite output signal. Transmission during the first time period occurs at a first power level, e.g., mean power, that is associated with a lower probability of clipping the first composite output signal. During the second time period, the second composite signal is transmitted at a second power level, e.g., mean power, higher than the first power level which improves reception at the second terminals.
Public/Granted literature
- US20080207143A1 Radio communications using scheduled power amplifier backoff Public/Granted day:2008-08-28
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