Circularly symmetric algorithm for UWB RF signal receiving channel based on noise cancellation
| Autor: | Luhong Mao, Dongquan Huo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
business.industry
Computer science Acoustics Physics QC1-999 circularly symmetric General Physics and Astronomy Ultra-wideband Gabor transform rf signal receiving channel 01 natural sciences 010305 fluids & plasmas ultra wideband Symmetric-key algorithm noise cancellation 0103 physical sciences Radio frequency gabor transform business 010301 acoustics Active noise control Communication channel Computer Science::Information Theory |
| Zdroj: | Open Physics, Vol 18, Iss 1, Pp 779-789 (2020) |
| ISSN: | 2391-5471 |
| Popis: | Due to the high redundancy of ultra-wideband (UWB) radio frequency (RF) signal receiving channel and the channel’s non-rotation invariance, the signal-to-noise ratio (SNR) of signal transmission is increased. In order to solve this problem, a circularly symmetric algorithm for the UWB RF signal receiving channel based on spectrum compression cannot effectively reduce the redundancy of UWB RF signal receiving channel; the channel does not have rotation invariance; and the effect of noise reduction is poor. A circularly symmetric algorithm for the UWB RF signal receiving channel based on noise cancellation is proposed, and a noise cancellation structure at the input stage of the receiving channel is constructed to ensure channel noise cancellation and reduce noise in the channel. On this basis, five power zones are used to reasonably select RF devices, receive and downconvert UWB RF signal receiving channel, and convert the received UWB RF signal channel into circular symmetric Gabor transform to reduce redundancy and ensure the strict rotation invariance of the channel. The experimental results show that the proposed algorithm guarantees the quality of the signal and the stable transmission of the signal information. The SNR is 3.8672, and the root mean square error is 0.4078. The third-order cross-modulation coefficient of the signal receiving channel controlled by the algorithm meets the requirements of the index and the mirror frequency rejection requirement of the index. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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