Method, device and system for data compression and decompression

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 ...

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

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