Abstract 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.

中文翻译：

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基于噪声消除的UWB射频信号接收通道圆对称算法

摘要 由于超宽带(UWB)射频(RF)信号接收信道的高冗余性和信道的非旋转不变性，提高了信号传输的信噪比(SNR)。针对这一问题，基于频谱压缩的UWB射频信号接收通道圆对称算法无法有效降低UWB射频信号接收通道的冗余度；通道没有旋转不变性；而且降噪效果差。提出了一种基于噪声消除的UWB射频信号接收信道的圆对称算法，在接收信道的输入级构建噪声消除结构，保证信道噪声消除，降低信道噪声。以这个为基础，五个功率区用于合理选择射频器件，接收和下变频UWB射频信号接收通道，将接收到的UWB射频信号通道转换为圆对称Gabor变换，减少冗余，保证通道严格的旋转不变性。实验结果表明，所提算法保证了信号质量和信号信息的稳定传输。SNR 为 3.8672，均方根误差为 0.4078。算法控制的信号接收通道的三阶交叉调制系数满足指标的要求和指标的镜频抑制要求。并将接收到的UWB射频信号信道转换为圆对称Gabor变换，以减少冗余，保证信道的严格旋转不变性。实验结果表明，所提算法保证了信号质量和信号信息的稳定传输。SNR 为 3.8672，均方根误差为 0.4078。算法控制的信号接收通道的三阶交叉调制系数满足指标的要求和指标的镜频抑制要求。并将接收到的UWB射频信号信道转换为圆对称Gabor变换，以减少冗余，保证信道的严格旋转不变性。实验结果表明，所提算法保证了信号质量和信号信息的稳定传输。SNR 为 3.8672，均方根误差为 0.4078。算法控制的信号接收通道的三阶交叉调制系数满足指标的要求和指标的镜频抑制要求。