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Ultra-wideband two phase PSK transmitter with balance structure and method

A technology of two-phase phase shift keying and balanced structure, applied in the field of communication, can solve the problems of complex realization of narrow pulses of negative polarity, difficulty of symmetry of positive polarity pulses, and inability to effectively suppress the leakage of local oscillators.

Inactive Publication Date: 2009-09-30
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, due to direct up-conversion, the suppression of local oscillator leakage can only be achieved through the own characteristics of the up-conversion device, which cannot effectively suppress local oscillator leakage.
[0004] There is another ultra-wideband direct-sequence binary phase-shift keying narrow pulse generator, in which the modulation method is to use two devices to respectively realize the positive polarity narrow pulse and the negative polarity narrow pulse, and then use the data from the data source as the The method of controlling the pulse output by the control signal realizes binary phase-shift keying control, but the disadvantage of this method is that the implementation of the negative narrow pulse is complicated, and it is difficult to ensure complete symmetry with the positive pulse

Method used

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  • Ultra-wideband two phase PSK transmitter with balance structure and method
  • Ultra-wideband two phase PSK transmitter with balance structure and method
  • Ultra-wideband two phase PSK transmitter with balance structure and method

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0024] The present invention mainly lies in performing binary phase-shift keying balanced modulation on the pulse ultra-wideband signal. The system is symmetrical, so the carrier leakage will cancel each other and reduce, and the polarity of the binary phase-shift keying modulation is determined by the carrier phase It reduces the influence of the input narrow pulse jitter and improves the signal-to-noise ratio of the transmitted pulse.

[0025] Such as figure 1 Shown is a structural diagram of a transmitter according to an embodiment o...

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Abstract

The present invention provides a transmitter structure for a pulse ultra-broadband signal, including a narrow pulse generating module, a balance modulation module, a local oscillation module, an amplifier and an antenna. The balance modulation module has a symmetrical structure for implementing a two phase PSK balance modulation to a narrow pulse ultra-broadband signal, which not only reduce the effect of a dithering effectively and eliminate a positive and a negative polarity requirement generated by the narrow pulse, also can restrain a carrier leakage.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a binary phase shift keying modulation method and a transmitter of a pulse ultra-wideband signal. Background technique [0002] In the pulse ultra-wideband communication system, the narrow pulse transmission signal of nanosecond and sub-nanosecond level is used, so even a small jitter can be compared with the pulse width, which has a great impact on the bit error rate of the received signal. [0003] In order to overcome this shortcoming, a wireless transmission and reception method of ultra-wideband FM signals has been proposed, in which the modulation method is to use two pulse generators to modulate data, then add the modulated pulse signals, and finally directly pass through Up-conversion transmission. However, due to direct up-conversion, the suppression of local oscillator leakage can only be realized through the own characteristics of the up-conversion device, which...

Claims

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Application Information

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IPC IPC(8): H04L27/20
Inventor 杨英王俊张琼王卫东
Owner UNIV OF SCI & TECH OF CHINA
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