Adaptive Out-of-Band Interference Suppression for Coexistent Wi-Fi and Bluetooth Systems

作者：Wang Chin Liang^*; Jan Min Chau; Chang Yuan Shuo; Wang Erlang; Lin Ying Hsi

来源：IEEE Communications Letters, 2017, 21(10): 2306-2309.

DOI：10.1109/LCOMM.2017.2730858

• Adpative filtering
• Bluetooth (BT) systems
• interference suppression
• normalized least mean-squared (NLMS) algorithm
• out-of-band (OOB) interference
• transmitter leakage
• WiFi systems

Coexistence of Wi-Fi and Bluetooth (BT) systems is often necessary in various handheld devices. Due to nonlinearities of radio frequency front-end components, leakage signals from one transmitter to the other transmitter would produce out-of-band (OOB) interference and corrupt adjacent frequency bands outside the spectral masks defined in standards. In this letter, we propose an adaptive OOB interference suppression scheme based on a modified normalized least mean-squared algorithm for coexistent Wi-Fi and BT transceivers. Computer simulation results show that the proposed approach provides pretty good performance in transmitter leakage cancellation and effectively relieves the OOB interference issue.

• 出版日期2017-10
• 单位清华大学