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A method and apparatus for signal compression

A signal compression and signal technology, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of high processing delay and large compression loss, so as to reduce delay, reduce compression loss, and improve user experience Effect

Active Publication Date: 2018-12-14
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0007] Embodiments of the present invention provide a signal compression method and device to solve the problems of high processing delay and large compression loss in existing signal compression methods

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  • A method and apparatus for signal compression
  • A method and apparatus for signal compression
  • A method and apparatus for signal compression

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Embodiment Construction

[0068] In order to solve the problems of high processing delay and large compression loss in the existing signal compression method, in the embodiment of the present invention, a signal compression method is redesigned, the method is to obtain the initial IQ signal, and based on the initial IQ signal contains Determine the overall shift length of the initial IQ signal based on the number of leading symbol bits corresponding to the first I signal and the first Q signal respectively, and then, based on the overall shift length, shift the first I signal and the first Q signal respectively processing, obtaining a second I signal and a second Q signal, and performing truncation processing on the second I signal and the second Q signal respectively according to a preset bit width to obtain a third I signal and a third Q signal, and finally, Based on the third I signal and the third Q signal, a target IQ signal is generated.

[0069] The following will clearly and completely describe...

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Abstract

The invention relates to the field of mobile communications, in particular to a signal compression method and apparatus. In order to solve the problems of high processing delay and high compression loss in the existing signal compression methods, the method comprises, based on the respective preamble symbol bits of the first i signal and the first q signal included in the initial iq signal, determining the overall displacement length, and based on the overall shift length, performing shift processing on the first I signal and the first Q signal, obtaining a second I signal and a second Q signal, and according to the preset bit width, a second I signal and a second Q signal are truncated, the third I signal and the third Q signal are obtained, and the target IQ signal is generated based onthe third I signal and the third Q signal. Thus, no additional AGC processing is required, and the time delay is greatly reduced. Moreover, since part of the IQ signal is completely reserved, the signal fidelity is high, and the compression loss is greatly reduced.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a signal compression method and device. Background technique [0002] Time Division Long Term Evolution (TD-LTE) systems and 5G systems pursue high-speed and large-capacity data transmission. In LTE systems and 5G systems, data transmission is usually implemented by base stations. Among them, indoor baseband unit equipment ( Building Baseband Unit (BBU) and Remote Radio Unit (RRU) are responsible for the baseband processing and radio frequency processing functions of the base station respectively. Optical fibers are used for data transmission between the BBU and RRU, mainly for transmission of operation and maintenance data and IQ signals , the interfaces at both ends are called IR interfaces. [0003] In order to achieve reliable and effective transmission of a large amount of data with a limited bandwidth, a compression method is usually used to compress the IQ signal trans...

Claims

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Application Information

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IPC IPC(8): H04W28/06
CPCH04W28/06
Inventor 李庆华孙华荣
Owner DATANG MOBILE COMM EQUIP CO LTD
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