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Pulse position modulation (PPM) ultra wide band (UWB) signal generation method

A pulse position modulation and ultra-wideband signal technology, applied in electrical components, transmission systems, etc., can solve problems such as limited control speed, difficulty in generating multi-pulse position modulated ultra-wideband signals, and limited control accuracy of synthesized signals, achieving tunable Good performance, small size and light weight

Active Publication Date: 2016-01-06
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

First, the delay of the composite signal and the control accuracy of the power ratio are limited, which affects the quality of the generated signal to a certain extent; second, the delay of the composite signal and the control speed of the power ratio are limited, which affects the solution to a certain extent reconfigurability; third, these schemes are generally difficult to generate multi-pulse modulation ultra-wideband signals

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  • Pulse position modulation (PPM) ultra wide band (UWB) signal generation method
  • Pulse position modulation (PPM) ultra wide band (UWB) signal generation method
  • Pulse position modulation (PPM) ultra wide band (UWB) signal generation method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like figure 1 As shown, the solution of the present invention is composed of a signal source 100 , a pulse position mapping module 200 , a laser 300 , an optical modulator 400 , an optical differentiation and synthesis module 500 and a photodetector 600 . The pulse position mapping module is composed of a serial / parallel converter 201, a pulse position encoder 202 and a parallel / serial converter 203 (eg figure 2 shown). The original serial bit information stream generated by the signal source is first converted into a parallel block code with a code length of n by a serial / parallel converter (such as figure 2 shown, b 1 , b 2 ,…,b n ). Each group of parallel block codes obtained is then encoded and mapped into corresponding pulse position encoding information (such as figure 2 shown, b 11 , b 12 ,…,b 1m ). Then, the obtained parallel pulse position...

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Abstract

The invention discloses a PPM UWB signal generation method. Original source information is coded and mapped to corresponding pulse position coding information by a pulse position mapping module, and then loaded on optical carrier waves by a light modulator. A modulated optical signal can generate a PPM UWB signal after differentiating, synthesis and photoelectric conversion in the light domain. The method ensures that generation diversity of the PPM UWB signals is realized on the basis that high-performance PPM UWB signals are generated, the PPM UWB signal generation technology is enriched, and especially the flexibility of generation PPM UWB signals by the photoelectric mixed technology is improved.

Description

technical field [0001] The invention relates to the fields of microwave photonics and microwave signal generation, in particular to the generation technology of photoelectric hybrid pulse position modulation ultra-wideband signal. Background technique [0002] Ultra-wideband signal communication technology has the advantages of low power consumption, high transmission rate, strong anti-interference ability, and sharing of existing wireless communication frequency bands. application. UWB signal generation technology is one of the key technologies of UWB communication technology. At present, UWB signal generation technologies can be mainly divided into two categories: electrical-based UWB signal generation technology and optical-based UWB signal generation technology. Compared with the traditional electrical UWB signal generation technology, the optical-based UWB signal generation technology has the advantages of ultra-low power consumption, good tunability, small size, ligh...

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Application Information

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IPC IPC(8): H04B1/7163
Inventor 易安林闫连山罗斌潘炜陈智宇蒋林叶佳
Owner SOUTHWEST JIAOTONG UNIV
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