Data compression method and device and data transmission method and system

A data compression and data technology, applied in the field of mobile communication, can solve the problem of large amount of information, and achieve the effect of avoiding in-band stray, reducing the amount of compressed information, and reducing the amount of transmitted information

Active Publication Date: 2015-02-25
COMBA TELECOM SYST CHINA LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Based on this, it is necessary to provide a data compression meth

Method used

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  • Data compression method and device and data transmission method and system
  • Data compression method and device and data transmission method and system
  • Data compression method and device and data transmission method and system

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Experimental program
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Embodiment Construction

[0081] Various embodiments of the data compression method and device, data transmission method and system of the present invention will be described in detail below.

[0082] First, various embodiments of the data compression method are described.

[0083] see figure 1 , is a schematic flow chart of Embodiment 1 of the data compression method of the present invention, comprising steps:

[0084] Step S101: Read the amplitude information and phase information of each IQ data pair in each group of IQ data pairs respectively;

[0085] In a specific embodiment, before step S101, steps may also be included:

[0086] Divide consecutive IQ data pairs of the same number into one group. For example: group the IQ data stream, and each group contains N IQ pairs. For example, each group contains 4 IQ data pairs - (I0, Q0), (I1, Q1), (I2, Q2), (I3, Q3) four IQ data pairs, a total of 8 data. The I data in the IQ data pair is then converted to amplitude information and the Q data to phas...

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Abstract

The invention discloses a data compression method and device and a data transmission method and system. The data compression method comprises the steps that amplitude information and phase information of all IQ data pairs in each IQ data pair group are read respectively; the phase information of all the IQ data pairs is subjected to bit cutting to obtain corresponding effective bit information; the amplitude information and the effective bit information in each IQ data pair group form new IQ data pairs, and the new IQ data pairs are compressed. According to the data compression method and device, in the compression process, the phase information is subjected to bit cutting before compression is conducted, so that the information compression amount is reduced. According to the data transmission method and system, in the compression process, the phase information is subjected to bit cutting before compression is conducted; in the decompression process, the effective bit information is subjected to zero filling to obtain the phase information, and finally the phase information is converted into IQ data, so that the information transmission amount is reduced.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a data compression method and device, and a data transmission method and system. Background technique [0002] With the continuous development of mobile communications, communication devices have higher and higher requirements for transmission signal bandwidth, and require higher rates on transmission links. The use of data compression technology can increase the effective bandwidth of the communication device within a certain range of allowable delay, and can reduce the cost of the entire communication network while upgrading the communication network and expanding the capacity of the infrastructure. Due to the high requirements for real-time data transmission in mobile communication and the small processing delay requirements for compression algorithms, it is generally impossible to use traditional video, image or text compression and decompression algorithms, because such a...

Claims

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Application Information

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IPC IPC(8): H03M7/30
Inventor 廖世文罗漫江
Owner COMBA TELECOM SYST CHINA LTD
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