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Ultra wide band chaotic communication method

A chaotic communication and ultra-wideband technology, applied in baseband system components, shaping networks in transmitters/receivers, digital transmission systems, etc. improved effect

Inactive Publication Date: 2009-12-16
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of ultra-wideband chaotic communication method, to overcome the shortcoming of existing chaotic on-off keying ultra-wideband system, to avoid the best non-zero threshold estimation process at the receiver end of the system, to solve the problem of the impact of noise on the threshold, Reduce the difficulty of implementing the system

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples. It should be noted that the protection scope of the present invention is not limited to the scope described in the examples.

[0026] A schematic diagram of an ultra-wideband chaotic communication method according to an embodiment of the present invention is as follows figure 1 As shown, it includes the sending end method of ultra-wideband chaotic communication and the receiving end method of ultra-wideband chaotic communication.

[0027] (1) a sender method of ultra-wideband chaotic communication, comprising the following steps:

[0028] A. Perform equalized orthogonal coding on the data to be sent. The data to be sent is binary data. EQC is a binary code, EQC has two codewords b 0 and b 1 , each codeword contains N code elements, each codeword has the same number of code elements "0" or "1", codeword b 0 and b 1 are mutually orthogonal, tha...

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Abstract

The invention discloses an ultra wide band chaotic communication method, comprising the following steps: balanced orthographic coding is carried out on the data which are to be sent; the balanced orthographic coding has two code words b0 and b1, each code word has identical number of code element '0' or '1', and b0 and b1 are orthographic with each other; after chaotic on-off keying modulation is carried out on the data which are to be sent and filtration and wave form moulding treatment are carried out on the signal s(t) which is to be transmitted, the signal s(t) is sent to a receiving terminal; and filtered after the receiving terminal receives the signal sent by a transmitting terminal, and signal energy is calculated and decoded; decoding is carried out by adopting the orthogonality and symmetry of balanced orthographic coding; and finally data are judged and output according to the size relation between the output value of coding units and zero. The communication system receiver terminal in the invention avoids the process of estimating and searching the optimal nonzero threshold value, overcomes the defect of the current chaotic on-off keying modulation ultra wide band communication system, and thus reducing the difficulty of system realization.

Description

technical field [0001] The invention relates to the technical field of ultra-wideband wireless communication, in particular to an ultra-wideband chaotic communication method. Background technique [0002] In recent years, ultra-wideband (UWB) wireless communication technology has received extensive attention and research. In the Wireless Personal Area Network (WPAN) wireless transmission technology, following Bluetooth and 802.11a / b, UWB has become a most competitive hot technology. The IEEE802.15.4a working group is committed to researching the low-rate wireless personal area network (LR-WPAN). The devices in the LR-WPAN have the characteristics of low data rate, low cost, low energy consumption, and low complexity. UWB chaotic communication technology is one of the main technologies to meet the requirements of IEEE 802.15.4a standard. [0003] Chaotic signals are broadband, deterministic, non-periodic, and quasi-random signals. The broadband characteristics of the chaot...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04L27/01H04L25/03
Inventor 宁鑫斐冯久超
Owner SOUTH CHINA UNIV OF TECH
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