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Signal processing method based on volume hologram relative storage system one dimension walsh change

A storage system and signal processing technology, applied in optical recording/reproducing/erasing methods, recording/reproducing/erasing using optical interference patterns, complex mathematical operations, etc., to achieve fast detection and recognition, high precision, and practical effects Good results

Inactive Publication Date: 2007-10-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid growth of today's data acquisition capabilities, there are more and more fields that need to process massive data, which puts forward higher requirements for data processing speed, and this growing requirement is difficult for current electronic computers to meet. Need to find new solutions

Method used

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  • Signal processing method based on volume hologram relative storage system one dimension walsh change
  • Signal processing method based on volume hologram relative storage system one dimension walsh change
  • Signal processing method based on volume hologram relative storage system one dimension walsh change

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specific Embodiment 1

[0083] This embodiment is an example of processing a signal using a one-dimensional Walsh transform based on a volume holographic correlation storage system. Find the result of one-dimensional Walsh transform on the signal amplitude (1, 2, 3, 4). The model of the spatial light modulator is CRL OptoLtd.VGA3, and the format is 640×480.

[0084] The specific implementation process of this embodiment is as follows:

[0085] 1. Determine the block rules, see Figure 3, divide the 640×480 spatial light modulator format into two equal parts horizontally, and then divide it into two equal parts vertically, and divide it into 4 blocks on average, and each sub-block has a format of 320×240;

[0086] 2. Refer to Figure 3 for the numbering rules. The sub-blocks are numbered 1 to 4 in the order from left to right and from top to bottom;

[0087] 3. Use the computer to generate the Walsh matrix of the 4th order Hadamard order [ H ] = ...

specific Embodiment 2

[0111] This embodiment is an example of processing a signal using a one-dimensional Walsh transform based on a volume holographic correlation storage system. Find the result of one-dimensional Walsh transform on the signal amplitude (4, 3, 2, 1). The model of the spatial light modulator is CRL OptoLtd.VGA3, and the format is 640×480.

[0112] The specific implementation process of this embodiment is as follows:

[0113] 1. Determine the block rules, see Figure 8, divide the 640×480 spatial light modulator format into four equal parts along the horizontal direction, and divide it into 4 blocks on average, and each sub-block has a format of 160×480;

[0114] 2. Refer to Figure 8 for the numbering rules. The sub-blocks are numbered from 1 to 4 in order from left to right;

[0115] 3. Use the computer to generate the Walsh matrix of the 4th order Hadamard order [ H ] = 1 ...

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Abstract

A method for processing signal based on one-dimensional Walsh transform of body holographic correlation storage system includes storing Walsh matrix into body holographic storage in mode of hologram in order to prepare one-dimensional inverter, inputting input signal into said inverter and obtaining one-dimensional Walsh transform result of input signal by detecting intensity of output signal so as to analyze character of signal.

Description

technical field [0001] The invention belongs to the technical field of one-dimensional Walsh transformation and volume holographic correlation. Background technique [0002] The one-dimensional Walsh transform is defined as follows: [0003] Given N=2 n Point input signal x(1), x(2), ..., x(N), its one-dimensional Walsh transform is defined as: [0004] X ( j ) = 1 N Σ k = 1 N x ( k ) W ( j , k ) j = 1,2 , · · · , N [0005] In the formula, W(j, k) represents the element of row j and column k of the Walsh matrix, and its value is +1 or -1. [0...

Claims

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Application Information

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IPC IPC(8): G06F17/14G11B7/0065
Inventor 曹良才马强苏萍倪凯瞿宗耀何庆声金国藩
Owner TSINGHUA UNIV