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A digital signal processing method
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A processing method and signal technology, applied in the direction of encryption device with shift register/memory, etc., can solve the problems of inability to meet high requirements for digital signal processing and analysis, DSP cannot play, data cannot be encrypted, etc. degree of accuracy, prevention of brute-force cracking, and the effect of strict and precise time-complexity correlations
Active Publication Date: 2015-08-26
GUANGXI NEW FUTURE INFORMATION IND
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At present, the processing of digital signals is mostly processed by floating-point operations, but because computers can only store integers, for massive digital signal processing, general floating-point operations may be very slow and have errors, which cannot meet the high requirements of digital signals. processing and analysis, and the DSP cannot exert its maximum effect; and for some important data, it cannot be encrypted in the pre-processing process
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Embodiment 1
[0020] Such as figure 1 As shown, the present invention provides a method for digitizing signals, including:
[0021] Step 1. The front-end system receives the original digitized signal "ebdaacaehfbihcebiiid" and transmits it to the DSP through the transmission system;
[0022] Step 2. On the DSP, the original digitized signal is "ebdaacaehfbihcebiiid", its basic set {a, b, c, d, e, f, g, h, I, j}, and the basic data set converted from the basic set is { 0,1,2,3,4,5,6,7,8,9};
[0023] Step 3. The basic data set corresponding to the original digitized signal is mapped to the 0th order sequence of "41300204751872418883";
[0024] Step 4. Start to process the data of order 0. For the initial basic data set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, the first number 4 to be processed is in The actual bit sequence in the initial basic set is 6, which is processed in reverse - counting from the back to the front, adding 0-1 to the actual bit sequence to obtain a sequential bit sequence of 5,...
[0032] The front-end system includes: FPGA, the second synchronous DRAM, the third synchronous DRAM, FLASH memory, A / D converter, ARM chip, power supply, USB HOST, JTAG, DM9000, RS232 and RS485, the FPGA is connected Described DSP chip, ARM chip, power supply, second synchronous DRAM and A / D converter, described ARM chip is connected described USB HOST, JTAG, DM9000, RS232, RS485, FLASH memory and the 3rd synchronous DRAM .
[0033] ARM is responsible for processing the input and output of the entire system and process management scheduling, including initial configuration settings;
[0034] FPGA is mainly responsible for the scheduling of specific sequence processing tasks and the data communication between DSP and ARM;
[0035] There can be one or more DSPs, which are generally determined according to the size of the data ...
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Abstract
The invention discloses a processing method and a device of digitized signals. Core methods of the processing method and the device of the digitized signals are mapping, sequencing, finding and recursion. The processing method and the device of the digitized signals are mainly used for analysis and process, probability analysis, extraction and hide of statistical characteristics, data encryption and decryption, trend analysis and judgment and the like on the digitized signals. According to the processing method of the digitized signals, fixed-point arithmetic is adopted and matched with a fixed-point digital signal processor (DSP) to process, the speed of digitized signal processing can be improved greatly, processing capability of the DSP is played to a maximum extent, and the whole performance between the DSP which is in a central processing unit (CPU) with the DSP and other chips or hardwares is improved greatly. The processing method of the digitized signals self has the function of encrypting the digitized signals, on certain occasions, the processing method of the digitized signals can be used for replacing an obfuscator, so that certain decryption methods utilizing language statistical laws are totally avoided, and hazard caused by decryption of important signals or data is avoided.
Description
technical field [0001] The invention relates to a digital signal processing method and device, belonging to the technical field of signal processing and analysis. Background technique [0002] In digital information processing, we often use a variety of algorithms, such as various common encryption and decryption algorithms, such as Fourier transform algorithms (FFT\DFT), etc., in different applications and fields, using appropriate Data algorithms can achieve a variety of different goals. At present, the processing of digital signals is mostly processed by floating-point operations, but because computers can only store integers, for massive digital signal processing, general floating-point operations may be very slow and have errors, which cannot meet the high requirements of digital signals. The processing and analysis, and DSP can not play its maximum effect; and for some more important data can not be encrypted in the pre-processing process. Contents of the invention ...
Claims
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