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An Improved Gaussian Function Based UWB Pulse Design Method

An ultra-wideband pulse and Gaussian function technology, applied in the field of ultra-wideband pulse design, can solve the problems of low power spectrum utilization, complex algorithms and implementation methods, etc., and achieve the effect of improving utilization

Inactive Publication Date: 2011-12-21
SHANGHAI NORMAL UNIVERSITY
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Problems solved by technology

Hu Jiang, Guo Feng and others used Gaussian pulse combinations of different amplitudes and delays with the same pulse formation factor to achieve the approximation of FCC radiation masking, but the algorithm and implementation method are more complicated
Rumin Yang, Chengbo Yu et al. proposed an adaptive pulse design algorithm based on the Hermite-Gaussian function as an orthogonal basis, which can meet the FCC radiation masking restrictions, but its allowable power spectrum utilization is low

Method used

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment the present invention will be further described

[0028] An improved Gaussian function-based ultra-wideband pulse design method, the specific design steps are as follows:

[0029] 1. Divide the frequency range of 0-10.6GHz into four commonly used sub-bands, the four sub-bands are 0-960MHz, 960-1610MHz, 1610-3100MHz and 3100-10600MHz;

[0030] 2. Design four band-pass filters according to the divided four sub-bands, and the pass-band frequency responses of the four band-pass filters correspond to the divided four sub-bands.

[0031] 3. For each sub-band, select an appropriate pulse shaping factor and the order of the derivative of the Gaussian function; the optimal sub-pulse for the sub-band is obtained by optimizing the power spectrum utilization while satisfying the FCC radiation mask.

[0032] 4. Input the sub-pulse corresponding to each sub-band to the corresponding band-pass filter.

[0033] 5. Add the ...

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Abstract

The invention discloses an improved ultra wide band pulse design method based on a Gaussian function, which relates to the field of an ultra wide band pulse design. In order to maximum the power spectrum utilization of the ultra wide band pulse under the emission mask stipulated by Federal Communications Commission (FCC), the method comprises the following steps of firstly dividing a 0-10.6 GHz frequency band into four sub-frequency bands; and then taking a Gaussian derived function as a basic function in each sub-frequency band to approach FCC emission mask, and obtaining the sub-pulse with a maximum power spectrum utilization; finally, passing the obtained four sub-pulses through a group of parallel bandpass filters, adding the output sub-pulses of the bandpass filters together, and obtaining the ultra wide band pulse with a frequency range from 0 to 10.6GHz. Compared with the existing ultra wide band pulse design method, the ultra wide band pulse spectrum obtained by the method in the invention can satisfy FCC emission mask and can effectively utilize the allowable power limit value of the FCC emission mask with the frequency range from 0 to 10.6 GHz; and thus, the power spectrum utilization can be improved.

Description

technical field [0001] The invention relates to the field of ultra-wideband pulse design, in particular to an improved Gaussian function-based ultra-wideband pulse design method applied to ultra-wideband systems. Background technique [0002] Ultra-wideband technology is a carrier-free communication method using ultra-wideband pulses with extremely short duration in the time domain. It can achieve high data transmission rates in a short range, and the power spectral density (PSD) of ultra-wideband pulses is extremely small. , and has the characteristics of spread spectrum communication. Mainly used in wireless LAN, home network, sensor network, radar ranging and positioning and other fields. Since ultra-wideband pulses occupy a large bandwidth, it may cause interference between ultra-wideband equipment and other existing communication systems. The power is limited, and the radiation shielding of indoor and outdoor ultra-broadband equipment is formulated respectively. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/717
Inventor 李莉武晓东张家凯
Owner SHANGHAI NORMAL UNIVERSITY
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