Data compression and decompression method, device and system
A data compression and decompression technology, applied in the direction of digital transmission system, transmission system, adjustment of transmission mode, etc.
Active Publication Date: 2018-11-06
SHENZHEN SAMSUNG COMM TECH RES +1
View PDF10 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the noise caused by this compression method will be more serious to the signal-to-noise ratio loss (SNR Loss) of data transmitted by low-power users
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0051]The embodiments of the present invention reduce the impact of lossy compression on data transmission by low-power users on the premise of ensuring the compression ratio of the overall data and the overall MSE or EVM. The embodiment of the present invention takes the set time length as the period, and converts the data to be transmitted in each period from the time domain to the frequency domain; after the weak power frequency points are identified according to the set identification rules, the weak power frequency points are identified Sending data weighting processing; convert other data converted into the frequency domain and the weighted data back to the time domain and compress them, and transmit them to the receiving end together with the weig...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a data compression and decompression method, device and system. The method includes taking a set time length as a period, and converting the data to be transmitted of each period from the time domain to the frequency domain; after the weak power frequency points are obtained according to the set recognition rule, carrying out weighted processing on the data sent by the weak-power frequency points obtained through recognition; converting other data converted into the frequency domain and the weighted data back to the time domain and compressing the data, and transmittingthe data together with the weighting information to the receiving end. At the receiving end, when the transmitted data is received, the set time length is used as a period, the transmission data of each period is subjected to time domain decompression, the decompressed data is converted from the time domain to the frequency domain, and according to the received weighting information, the weak-power frequency points are obtained through recognition and the de-weighting treatment is carried out on the data sent by the weak-power frequency points obtained through recognition, and other data converted into the frequency domain and de-weighted data are converted into the time domain. On the premise that the compression ratio of the overall data, the overall MSE or EVM are guaranteed, the influence of the lossy compression on the transmission data of the weak-power users is reduced.
Description
technical field [0001] The invention relates to data processing technology in the field of wireless communication, in particular to a data compression and decompression method, device and system. Background technique [0002] A modern wireless communication system adopts a common public radio interface (CPRI, Common Public Radio Interface) protocol and uses optical fibers to transmit data. In the current era of high-speed and large-bandwidth, the demand for data transmission in wireless communication systems is increasing, and it is necessary to find ways to reduce the demand for high-speed optical fibers for data transmission. Compressing the transmitted data is an important method. [0003] At present, the data compression method in the wireless communication system is: simply perform lossy compression on the transmitted data. Specifically, the data to be transmitted is directly compressed in the time domain, and then the data compressed in the time domain is transmitted ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04L1/00H04L29/06
CPCH04L1/0007H04L69/04
Inventor 林青春沈俊章少敏董鹏
Owner SHENZHEN SAMSUNG COMM TECH RES