Over-the-Air Successive Interference Cancellation for Efficient 5G NR and Wi-Fi Spectrum Reuse

An over-the-air (OTA) experimental evaluation of concurrent 5G New Radio (5G NR) and Wi-Fi transmission using successive interference cancellation (SIC) in a shielded-box environment is presented. A USRP is used as the receiver, which captures the composite waveform containing both air-interface signals and applies sample-domain SIC to suppress the dominant 5G-NR signal and recover Wi-Fi signal from the residual waveform. The framework reports error vector magnitude (EVM), bit error rate (BER), sample-domain cancellation depth, and channel-estimate suppression, and, at the representative (18) dB attenuation point, measures (11.88) dB cancellation depth and (26.96) dB 5G channel suppression. The proposed methodology provides a practical basis for assessing cross-technology coexistence and receiver-side interference suppression under controlled OTA conditions.

Source: arXiv:2605.27005v1 - http://arxiv.org/abs/2605.27005v1 PDF: https://arxiv.org/pdf/2605.27005v1 Original Link: http://arxiv.org/abs/2605.27005v1