Ultra-Wideband (UWB) is widely used in wireless communication systems while Unified S-band (USB) receivers are often used in the tracking, telemetry and command (TT and C) system. In this paper, unlike conventional applications, the UWB signals are employed as interference signals to a USB model. This study focuses on the performance of USB receiver under the interference situation of IR-UWB communication signal and the Signal-to-Interference Ratio (SIR) threshold is analyzed in different Signal-to-Noise Ratio (SNR). Furthermore, an appropriate Soft-Spectrum Adaptation (SSA) method is employed to design the ultra-wideband (UWB) signal and the UWB pulse can cover the entire S-band. Simultaneously, it researches the performance of USB receiver under the UWB pulse interference. Our studies and performance results show a referenced threshold for both the anti-interference of USB receiver and UWB signal interfere receiver.
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