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Sending end equipment and signal processing method

A technology of sending end and equipment, applied in the field of communication, can solve problems such as in-band distortion and out-of-band distortion

Active Publication Date: 2020-05-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Severe in-band and out-of-band distortion will occur when the signal passes through a power amplifier with low linearity

Method used

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  • Sending end equipment and signal processing method
  • Sending end equipment and signal processing method
  • Sending end equipment and signal processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] In this embodiment, a feedback loop and a target feedback antenna with a fixed position are deployed in the sending end device. By adjusting the phase of the phase shifter, the sending end device completes signal reception and feedback, specifically, completes signal reception and feedback in the direction of the main beam. In other words, in this embodiment, by adjusting the phase of the phase shifter, the phase difference between the first mixed signal and the second mixed signal is within a preset range.

[0096] Such as Figure 4 As shown in , it is a schematic diagram of a sending end device provided by the embodiment of the present application. Figure 4 The sender device shown includes a digital domain part and an analog domain part. specific:

[0097] The digital domain section includes:

[0098] The DPD parameter estimation unit 41 is configured to use the training signal sent by the transmitting antenna array 47 and the fed-back training signal received by...

Embodiment 2

[0159] In this embodiment, a feedback link and a position-variable target feedback antenna are set in the sending end device. By adjusting the position of the target feedback antenna, the sending end device can complete the reception and feedback of signals, specifically the reception and feedback of signals in the direction of the main beam. In other words, in this embodiment, by adjusting the position of the target feedback antenna, the phase difference between the first mixed signal and the second mixed signal is within a preset range.

[0160] Such as Figure 7 As shown in , it is a schematic diagram of a sending end device provided by the embodiment of the present application. and Figure 4 compared to, Figure 7 The position of the target feedback antenna in the transmitter device is shown to be variable. Optionally, in order to achieve variable position of the target feedback antenna, Figure 7 Antenna support 52 may be provided in the center for supporting the tar...

Embodiment 3

[0182] In this embodiment, a feedback link and a candidate feedback antenna group are set in the sending end device, the candidate feedback antenna group includes at least two candidate feedback antennas, and each candidate feedback antenna in the candidate feedback antenna group has a different position. By selecting a candidate feedback antenna from the candidate feedback antenna group as the target feedback antenna, the sending end device can complete signal reception and feedback, specifically complete signal reception and feedback in the direction of the main beam. In other words, in this embodiment, by adjusting the phase of the phase shifter, the phase difference between the first mixed signal and the second mixed signal is within a preset range.

[0183] Such as Figure 10 As shown in , it is a schematic diagram of a sending end device provided by the embodiment of the present application. and Figure 4 compared to, Figure 10 At least two candidate feedback antenna...

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Abstract

The invention discloses sending end equipment and a signal processing method, relates to the technical field of communication, and is used for providing an effective pre-distortion architecture. The sending end equipment comprises m sending antenna groups, a target feedback antenna and a processor. The m sending antenna groups and the target feedback antenna are respectively connected with the processor; the m sending antenna groups are used for sending m training signals under the control of the processor; the target feedback antenna is used for receiving a first mixed signal obtained by superposing the m training signals in space under the control of the processor; the phase difference between the phase of the first mixed signal and a second mixed signal obtained by superposing m training signals received by the receiving end equipment in space is within a preset range; the processor is used for carrying out DPD parameter estimation according to the first mixed signal to obtain a DPDparameter, and carrying out pre-distortion processing on the signal to be sent according to the DPD parameter; and the m sending antenna groups are also used for sending the pre-distorted signals tobe sent under the control of the processor.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a sending end device and a signal processing method. Background technique [0002] Compared with the traditional multiple-input and multiple-output (MIMO) technology, the massive MIMO technology has dozens or even hundreds of transmitting antennas. By combining with beamforming technology, massive MIMO technology can effectively improve the spectrum efficiency, power efficiency, coverage and communication reliability of wireless communication systems. [0003] In a massive MIMO system, an independent power amplifier (poweramplifier, PA, power amplifier) ​​link is generally configured for each transmit antenna. This means that in the massive MIMO system, the number of power amplifiers of the transmitting end equipment will also reach dozens or even hundreds. At this time, in order to reduce the energy consumption of the system, it is necessary to improve the ...

Claims

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Application Information

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IPC IPC(8): H04L25/49H04B7/0413
CPCH04L25/49H04B7/0413H04L25/03343H04B7/0691H04B1/0475H04B7/0417H04B2001/0425Y02D30/70H04L25/0222H04L25/0224H04B7/0617H04B2001/0433
Inventor 吕毅博李旭王光健黄晶晶
Owner HUAWEI TECH CO LTD
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