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1. 发明专利

GB2584174A Method and apparatus for signal regeneration 未知
公开(公告)号：GB2584174A
公开(公告)日：2020-11-25
申请号：GB202001345
申请日：2020-01-31
申请人： SECR DEFENCE
发明人： PAUL MASON , STEPHEN JOHN BOYES , JEHAN JAYANETTI
IPC分类号： H04B17/26
摘要： A method and apparatus for regenerating a signal is provided. The method involves sampling a received signal 13 to obtain a plurality of samples each having an associated magnitude. The samples are sorted to obtain a statistical distribution 15 which may be a histogram. Known distributions are fitted to the statistical distribution using a fitting operation 16, and for each a measure of similarity is obtained. A matched distribution is then determined from the measures of similarity, the matched distribution corresponding to an optimum value of the measure of similarity. A regenerated signal is then synthesised using the matched distribution and the regenerated signal is then output. Such a method purports to mitigate a storage burden associated with the recording and subsequent regeneration of representative wireless signal environments for wireless device testing.

2. 发明专利

GB2584174B Method and apparatus for signal regeneration 未知
公开(公告)号：GB2584174B
公开(公告)日：2022-09-28
申请号：GB202001345
申请日：2020-01-31
申请人： SECR DEFENCE
发明人： PAUL MASON , STEPHEN JOHN BOYES , JEHAN JAYANETTI
IPC分类号： H04B17/26 , H04B17/00 , H04B17/318 , H04B17/391
摘要： A method (10) of regenerating a signal is provided. The method involves sampling (13) a received signal to obtain a plurality of samples each having an associated magnitude. The samples are sorted (15) to obtain a statistical distribution (which may be a histogram). Known distributions are fitted to the statistical distribution using a fitting operation (16, 17), and for each a measure of similarity is obtained. A matched distribution is then determined from the measures of similarity (18), that is subsequently used to regenerate a signal (12) that itself is statistically representative of the originally sampled signal. Such a method mitigates the storage burden associated with the recording and subsequent regeneration of representative wireless signal environments for wireless device testing. Also relates to an apparatus for the same.

3. 发明专利

GB2588500A Computer implemented method of decoding a signal 未知
公开(公告)号：GB2588500A
公开(公告)日：2021-04-28
申请号：GB202012020
申请日：2020-08-03
申请人： SECR DEFENCE
发明人： PAUL MASON
IPC分类号： H04N19/00 , G06F17/14 , H04N19/63
摘要： A computer implemented method of decoding a signal 30 which comprises receiving a signal 31 (which may be an electromagnetic signal), sampling the received signal to generate an input waveform having magnitude and phase components 32, applying a transform operation to the input waveform to generate a first decoded signal, and then outputting the first decoded signal 35. The transform operation comprises pre-processing the input waveform to generate a mirrored inverted waveform 33 and then applying a continuous wavelet transform to the mirrored inverted waveform 34 to generate the first decoded signal. This allows inversion of the frequency and temporal resolution of the continuous wavelet transform (CWT), thereby enabling improved temporal and frequency decoding of a signal. Particularly suitable for signal filters and filtering units. Preferably, the input waveform is pre-processed by adding a phase shift of pi radians to the phase component of the input and multiplying the phase component by -1. Preferably a filtered signal is generated by applying an inverse CWT to a modified decoded signal.

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