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Signal sending device and signal sending method

A signal transmission and signal technology, applied in the field of predistortion, can solve problems such as RF signal distortion

Active Publication Date: 2019-12-20
MEDIATEK SINGAPORE PTE LTD SINGAPORE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the boosted RF signal is distorted
In addition, when the data rate of the wireless signal decreases, for example, only part of the resource block (Resource Block, RB) is used to transmit data, the CIM3 effect is more serious, and the CIM3 signal will affect the adjacent channel near the channel of the LTE wireless system

Method used

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  • Signal sending device and signal sending method
  • Signal sending device and signal sending method
  • Signal sending device and signal sending method

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Embodiment Construction

[0012] Throughout the specification and the appended claims, certain terms are used to refer to specific elements. Those skilled in the art should understand that electronic device manufacturers may use different names to refer to the same elements. This manual distinguishes different elements not by differences in names but differences in functions. The terms "including" and "including" used in the following description and claims are open-ended terms, so they should be interpreted as "including, but not limited to...". In addition, the term "coupled" means indirect or direct electrical connection. Therefore, if one device is coupled to another device, the connection can be a direct electrical connection or an indirect electrical connection through other devices and connections.

[0013] Please refer to figure 1 , figure 1 It is a schematic diagram illustrating the first signal sending device 100 according to an embodiment of the present invention. The signal sending device 10...

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Abstract

A signal transmitting apparatus includes: a first converting device arranged to generate an up-converted in-phase signal according to an in-phase digital signal and a first pre-distortion signal; a second converting device arranged to generate an up-converted quadrature signal according to a quadrature digital signal and a second pre-distortion signal; an amplifying device arranged to generate an amplified signal according to the up-converted in-phase signal and the up-converted quadrature signal; and a processing device arranged to generate the first pre-distortion signal according to a first combination signal combined by a cube of the in-phase digital signal and a multiplication of the in-phase digital signal and a square of the quadrature digital signal, and to generate the second pre-distortion signal according to a second combination signal combined by a cube of the quadrature digital signal and a multiplication of the quadrature digital signal and a square of the in-phase digital signal.

Description

Technical field [0001] The present invention relates to a signal transmitting apparatus (signal transmitting apparatus) and a method thereof, and more particularly, to a pre-distortion method for reducing the power of a CIM3 signal of the signal transmitting apparatus. Background technique [0002] In a wireless communication system, a transmitter (transmitter) is used to transmit wireless signals to a target receiver. When the power of the wireless signal is greater, the transmission range is longer. At the same time, when the bandwidth of the wireless signal is wider, the transmission rate is higher. However, when the power and bandwidth of the wireless signal are high, the non-linear characteristics of the transmitter will bring some problems to the wireless system. Taking the Long Term Evolution (LTE) wireless system as an example, a passive mixer (passive mixer) is usually used to up-convert a wireless signal into a radio frequency (RF) signal, and can The programmed gain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/36
CPCH04L27/368H04B1/04H04B2001/0425
Inventor 陈信宏曼诺·克兰多斯·安西索张为凯黄千致陈奇灿胡俊
Owner MEDIATEK SINGAPORE PTE LTD SINGAPORE