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Hundred mega broadband digital predistortion power amplifier device and method

A technology of digital pre-distortion and power amplification, which is applied in improving amplifiers to reduce nonlinear distortion, synchronization/start-stop systems, multi-frequency code systems, etc., and can solve problems such as low efficiency and poor linearity of broadband signal transmission power amplifiers

Inactive Publication Date: 2008-05-21
BEIJING NORTHEN FIBERHOME TECH CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of poor linearity and low efficiency of broadband signal transmission power amplifiers, and to provide a digital predistortion power amplification device and method with a bandwidth of 100M

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  • Hundred mega broadband digital predistortion power amplifier device and method
  • Hundred mega broadband digital predistortion power amplifier device and method
  • Hundred mega broadband digital predistortion power amplifier device and method

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Embodiment Construction

[0042] The device and method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0043] Fig. 1 is a general structural block diagram of a broadband digital predistortion power amplifying device of the present invention. FIG. 2 is a diagram of a predistortion generator employed in the apparatus of FIG. 1. FIG. Fig. 3 is a predistortion generator used in the prior art.

[0044] As shown in Figure 1, the 100M bandwidth digital predistortion power amplification device of the present invention includes: a predistortion generator 102a, a digital-to-analog converter 102b, a first filter 102c, an upconverter 102d, a power amplifier 102e, and a coupler 102f , a down converter 102h, a second filter 102j, an analog-to-digital converter 102k, an error signal extractor 102m and an adaptive module 102l, a local oscillator unit 102g, and the like. Wherein, the pre-distortion generator 102a is to carry out pre-distortion processing and...

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Abstract

The present invention relates to a digital pre-distortion power amplification device and method with a bandwidth of 100M, wherein the polynomial pre-distortion function adopted by the pre-distortion processing algorithm is jointly determined by the instantaneous input signal and the previous input signal. The present invention is a broadband digital predistortion power amplifying device that works on a 3.5GHz frequency band, has a working bandwidth greater than 100MHz, and modulates signals of OFDM signals.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a 100M broadband digital predistortion power amplification device and method for the wireless communication field. Background technique [0002] The main task of the ITU-R WP8F working group established in early 2000 is to be responsible for the future development of 3G and research beyond 3G. In October 2001, at the sixth conference held in Japan, the data transmission rate goal of Super 3G was proposed: Super 3G will support a maximum rate of about 100Mbit / s in a high-speed mobile environment around 2010, and reach 1Gbit / s in a low-speed mobile environment. s rate. At present, the mainstream will adopt the orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) technology. OFDM is a high-speed data transmission technology in a wireless environment. The biggest advantage is that it can resist frequency selective fading or na...

Claims

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Application Information

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IPC IPC(8): H04L25/49H04L27/26H03F1/32
Inventor 刘广才
Owner BEIJING NORTHEN FIBERHOME TECH CO LTD
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