发明名称 |
Power control scheme for maximizing carrier signal-to-noise ratio in multicarrier transmitters |
摘要 |
A method and apparatus for maximizing the signal-to-noise ratio of an output signal from a digital-to-analog converter. In a multicarrier transmitter the power of a plurality of modulated digital data streams are individually adjusted so that the peak power of the sum of the signals of the modulated data streams is equal to a full scale level of a digital-to-analog converter. The power adjusted signals are upconverted to their respective carrier frequencies and combined into a single digital data stream by an adder. The single digital data stream is converted into an analog data stream by the digital-to-analog converter. The power of the analog data stream is adjusted so that the power of each carrier frequency is at a level which provides a corresponding mobile station with a signal of acceptable quality.
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申请公布号 |
US6570929(B1) |
申请公布日期 |
2003.05.27 |
申请号 |
US19990349717 |
申请日期 |
1999.07.08 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
ERIKSSON PATRIK |
分类号 |
H04B7/005;H04L5/06;H04L27/26;(IPC1-7):H04L27/28;H04B1/04;H04B1/05;H03F3/45 |
主分类号 |
H04B7/005 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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