Design method for 2-D signals with low/zero correlation region

Abstract

A design method for 2D signals with low correlation region features the bit addition of optimal 2D signals with a group of 2D signals whose main peak of correlation function is + / -1. A signal design technique with zero correlation region features use of a group of non-periodical orthogonal complementing sequence sets. Its advantages are non-interferance transmission, real-time regulation and flexible-selection of parameters. It can be used for band-spread communication, aperture imaging, encryption, etc..

Description

Technical field: [0001] The invention relates to a two-dimensional signal design technology, in particular to a two-dimensional signal design with good correlation characteristics in low / zero correlation regions. Background technique: [0002] In many actual communication engineering system designs, it is required that the processed signal set has at least one of the following two conditions or both of them: [0003] 1. Each signal in the signal set is easily distinguished from its own time-delay signal, that is, its autocorrelation value is required to be as small as possible; [0004] 2. Each signal in the signal set is easily distinguished from other signals in the signal set and their time-delayed signals, that is, their cross-correlation values ​​are required to be as small as possible. [0005] The first property mentioned above is very important for systems such as spread spectrum communication systems, remote control telemetry systems and radar systems. For simulta...

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Problems solved by technology

[0012] Unfortunately, in one dimension, be it binary, multivariate or complex signals, it has been proven that no signal with such ideal correlation properties exists

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