An RF-Band Adaptive Predistorter Power Amplifier(Special Issue on Software Defined Radio Technology and Its Applications)
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概要
- 論文の詳細を見る
A basestation power amplifier requires high linearity and stable operation for common amplification of a multiplexed wideband signal. Nonlinearity compensation techniques with the feedforward or predistorter are useful for this purpose. This paper presents a predistortion amplifier with automatic control at RF band for application at a basestation. In this method, the predistorter distorts an RF input signal by referring to a look-up table (LUT) corresponding to the input power. Out-of-band radiation power are directly monitored at IF band to determine the LUT. A DSP with an iterative algorithm updates the content of the LUT to minimize the out-of-band radiation power. Computer simulation experiment is carried out. The use of this proposed method promises a highly linear wideband and high powerefficiency amplifier.
- 社団法人電子情報通信学会の論文
- 2002-12-01
著者
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Akaiwa Yoshihiko
Department Of Intelligent Systems Graduate School Of Information Science And Electrical Engineering
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Akaiwa Yoshihiko
Department Of Intelligent Systems Graduate School Of Information Science And Electrical Engineering
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SETO Yoshitaka
Wireless Solution Laboratories, Corporate Engineering Division, Matsushita Communication Ind. Co., L
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MIZUTA Shinji
NTT DoCoMo, Inc.
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Mizuta Shinji
Ntt Docomo Inc.
関連論文
- A Feedback Type Adaptive Array Antenna with One Bit Feedback Information and Adaptive Update Size in FDD System(Wireless Communication Technologies)
- Performance of a Base Station Feedback-Type Adaptive Array Antenna with Mobile Station Diversity Reception(Wireless Communication Technologies)
- Performance of a Base Station Feedback-Type Adaptive Array Antenna with Limited Number of Feedback Bits(Wireless Communication Technologies)
- An RF-Band Adaptive Predistorter Power Amplifier(Special Issue on Software Defined Radio Technology and Its Applications)