Signal sequence processing method and base station

A technology of signal sequence and processing method, applied in the field of communication, can solve the problems of sudden change of power amplifier model, difficult to effectively correct the pre-distortion model, etc., and achieve the effect of optimizing matching.

Active Publication Date: 2012-10-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, during the research process of realizing the present invention, the inventor found that the prior art has the following defects: many of the current wireless communication services are bursty, which makes the power amplifier

Method used

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  • Signal sequence processing method and base station
  • Signal sequence processing method and base station
  • Signal sequence processing method and base station

Examples

Experimental program
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Example Embodiment

[0033] Example one

[0034] figure 1 This is a flowchart of a signal sequence processing method provided by Embodiment 1 of the present invention, and the method is suitable for Figure 2A The power amplifier predistortion system shown. Such as Figure 2A As shown, the predistortion system generally includes a predistortion module 210, a power amplifier module 220, and a model correction module 230. The predistortion module 210 has a predistortion model, and the power amplifier module 220 implements the power amplifier model in the form of hardware and / or software. The nonlinear characteristics of the power amplifier module may be as Figure 2B As shown, the signal characteristics after predistortion are as follows Figure 2C As shown, after predistortion processing and power amplifier, it forms Figure 2D The shown theoretically does not distort the signal. Figure 2A The predistortion system shown is a logical structure relationship, and when it is implemented by hardware, it i...

Example Embodiment

[0055] Example two

[0056] The second embodiment of the present invention provides a signal sequence processing method. In practical applications, there are many ways to form a training signal with set signal attributes. This embodiment is one of the preferred ways, that is, the operation of forming a training signal with set signal attributes in the acquired signal sequence is specifically:

[0057] A training signal is added to the idle time slot of the acquired signal sequence, and the training signal is set to have a set transmission power, a set frequency, and / or a set bandwidth.

[0058] The technical solution of this embodiment is easier to implement. According to the provisions of the communication protocol, some idle time slots are often reserved in logic signals, and the positions of these idle time slots are fixed and predictable according to the protocol. Adding training signals to these idle time slots does not affect the transmission of existing service signals, and ...

Example Embodiment

[0062] Example three

[0063] The third embodiment of the present invention provides a signal sequence processing method. The difference between the method and the second embodiment lies in the method of forming the training signal. That is, the operation of forming a training signal with set signal attributes in the acquired signal sequence is specifically: detecting a service signal with set transmit power, set frequency and / or set bandwidth in the acquired signal sequence, as the The training signal.

[0064] In this embodiment, service signals that meet the set requirements are actively selected as training signals by detecting service signals. Thus, the power, bandwidth, frequency and other factors of the training signal can meet the requirements of detection and correction without affecting the existing service signal.

[0065] Preferably, the operation of forming a training signal with set signal attributes in the acquired signal sequence is specifically: detecting a service...

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Abstract

Disclosed are a signal sequence processing method and a base station. The method includes: obtaining a signal sequence; forming a training signal with a set signal attribute in the obtained signal sequence; pre-distorting the signal sequence formed with the training signal using a pre-distortion model; amplifying the pre-distorted output signals using a power amplification module and then outputting the same; collecting the amplified training signal in the signal sequence amplified and outputted by the power amplification module; and modifying the pre-distortion model according to the collected training signal. In the present invention, by forming a training signal meeting the set requirements, the signal attribute of the training signal can be controlled actively; and the above solution is adapted to the feedback requirements on the modification of the pre-distortion model, so that the nonlinear features of the training signal after power amplification can be collected timely and effectively to modify the pre-distortion model, optimizing the compatibility of the pre-distortion model and the power amplification module.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a signal sequence processing method and a base station. Background technique [0002] The power amplifier module used in wireless communication usually implements the required power amplifier model in the form of hardware combined with software. However, the power amplifier module used in practice usually has the problem of nonlinear amplification of the signal sequence. The distortion algorithm is used to correct the nonlinearity of the power amplifier module. According to the realization method of the pre-distortion model, it can be divided into analog and digital. Currently, a digital pre-distortion algorithm (Digital Pre-Distortion, DPD for short) is widely used. [0003] In practical applications, the nonlinear characteristics of the power amplifier module are not always constant, but change with factors such as temperature, frequency, and time, so the...

Claims

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Application Information

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IPC IPC(8): H04L25/49H04W88/08
CPCH04L27/368H04L25/49
Inventor 郭江唐海正李应希
Owner HUAWEI TECH CO LTD
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