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Communication device and method of multipath compensation for digital predistortion linearization

A digital pre-distortion and communication device technology, which is applied to parts of amplification devices, synchronization/start-stop systems, amplifiers, etc., can solve problems such as delay and feedback channel signal distortion, and achieve the effect of improving quality and facilitating subsequent processing

Inactive Publication Date: 2015-05-13
MICROELECTRONICS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At the same time, other factors in the signal transmission of different channels, such as: the input transmission line of the amplifier and the connection line between the amplifier and the feedback signal receiver, etc. will also introduce significantly delayed reflected signals, which will also cause signal distortion in the feedback channel

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  • Communication device and method of multipath compensation for digital predistortion linearization
  • Communication device and method of multipath compensation for digital predistortion linearization
  • Communication device and method of multipath compensation for digital predistortion linearization

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Embodiment Construction

[0063] The invention discloses a method for compensating distortion caused by multi-channel signals, reflection signals and other factors, so as to improve the performance of DPD linearization. Wireless communication devices compatible with the present invention include MCPA transmission systems. The communication device disclosed in the embodiments may be an independent device, various integrated network gateway devices or network terminal devices. Various network gateway devices include base stations, bridges, routers, switches, hotspots, or hubs in wireless networks. Network terminal equipment includes set-top boxes, mobile phones, personal tablet computers, desktop computers, media players, digital cameras, personal digital assistants (Personal Digital Assistants, PDAs), navigation devices or mobile Internet devices (Mobile Internet Devices, MID), etc. .

[0064] figure 1 It is a structure diagram of an embodiment of an MCPA transmission system 10 with a DPD processing ...

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Abstract

A method of multipath compensation for digital pre-distortion (DPD) linearization suppresses linear distortion caused by reflected signals and distortion in transmitting and receiving paths. Reflection suppression suppresses effects of the linear distortion on the transmitting and receiving paths.

Description

technical field [0001] The invention relates to a signal processing system, in particular to a communication device and a method for improving the linearization of digital predistortion. Background technique [0002] In wireless communication, a power amplifier (Power Amplifier, PA) is usually used to transmit multi-carrier signals. The wireless transmit amplifiers in most communication systems have certain requirements on the linearity of the input signal. The amplifier will compress the input signal or perform non-linear input and output processing, so as to prevent the output signal from interfering with the signal of the adjacent channel and maintain the adjacent channel power ratio (Adjacent Channel Power Ratio, ACPR). [0003] Predistortion is a technique to improve the non-linear effect and ACPR of wireless transmit amplifiers. Apply digital pre-distortion technology in the transmission system, compare the transmission signal and the feedback signal, and compress th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49
CPCH03F1/3241H04B1/0475H04B2001/0425
Inventor 该谦
Owner MICROELECTRONICS TECH INC