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A novel method for receiving ultra wideband signal

A technology of ultra-wideband signals and receiving methods, applied in the field of communication methods using ultra-wideband signals, can solve problems such as high data rate, limited system capacity, and inability to adapt the sampling rate of parallel branches to achieve stability assurance, The effect of reducing the requirements of device performance and enhancing the ability to suppress the influence of fading channels

Inactive Publication Date: 2007-07-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA +2
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Problems solved by technology

[0015] (3) The sampling rate of each parallel branch cannot be adaptively changed with the actual situation when the delay unit group is used to receive signals in parallel;
[0016] (4) The existing receivers are all synthesized serial outputs, and the data rate is too high, which brings great pressure to the post-processing;
[0017] (5) The implementation cost of the system is high;
[0018] (6) The capacity of the system is limited and does not meet the requirements of future communication systems
[0019] (7) It is not conducive to the practical and commercialization of UWB systems

Method used

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  • A novel method for receiving ultra wideband signal
  • A novel method for receiving ultra wideband signal
  • A novel method for receiving ultra wideband signal

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Embodiment Construction

[0067] As shown in Figure 4, if there are 4 channels of parallel sampling, then N=4, we assume that the transmitter transmits a Gaussian pulse signal with a bandwidth of 2GHz, that is, from DC (direct current) to 2GHz. The received ultra-wideband signal is amplified with low noise through amplifier b, and then through low-pass filter b with a bandwidth of 2GHz (or slightly greater than 2GHz) for out-of-band noise suppression. Here we assume that the spectrum shift is zero, which does not loss of generality. So far, the signal preprocessing function of the radio frequency receiving front-end module 18 is completed. One output signal w(t) of the module 18 is sent to the synchronization module 19 for synchronous control, and one output signal is sent to four filters for parallel filtering. At this time, the working frequency band allocation principle of filter 0 to filter 3 can be: filter 0 is a low-pass filter from DC to 500MHz, filter 1 is a band-pass filter from 500MHz to 1GH...

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Abstract

The invention discloses a new ultrawideband (UWB) signal receiving method, using multichannel parallel filters to simultaneously in parallel receive the UWB signal, where the band width of the signal outputted by the filter can be less than that of the UWB signal, this largely reducing the requirements of a receiver on A / D sampling rate and timing (clock) accuracy, and thus able to use ordinary low-cost A / D and clock (timing) devices, etc, to receive the UWB signal, and giving a strong technical and cost support to the practicality of UWB systems.

Description

technical field [0001] The present invention belongs to the field of electromagnetic wave technology, such as wireless communication, radar, wired communication, etc., and particularly relates to a communication mode using ultra wideband (UWB: Ultra Wideband) signals. Background technique [0002] As we all know, there are two ways to define ultra-wideband (UWB: Ultra Wideband) signals as follows: [0003] Relative bandwidth (percentage bandwidth: greater than 25% [0004] The overall bandwidth is greater than 500MHz [0005] The comparison between UWB signal and narrowband signal is shown in Fig. 1. [0006] Composition of UWB signal transmitter: UWB signal transmitter includes UWB modulator module 7 composed of modulation module 1 and pulse waveform generator module 2, radio frequency composed of amplifier a module 3, filter a module 4 and spectrum shift a module 5 Front-end module 8 and transmitting antenna 6. as shown in picture 2. [0007] The working process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/06H03H17/02
Inventor 唐友喜邵士海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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