公开(公告)号：US09210535B2

公开(公告)日：2015-12-08

申请号：US13645346

申请日：2012-10-04

Applicant: QUALCOMM Incorporated

Inventor： Alireza Kheirkhahi ,  Shahram Abdollahi-Alibeik ,  Lalitkumar Nathawad ,  Ke Gong ,  Ali Agah

IPC: H04W4/00 ,  H04B1/525 ,  H04J11/00

CPC classification number: H04W4/80 ,  H04B1/525 ,  H04J11/0023

Abstract: This disclosure describes techniques for providing active interference cancellation in a wireless communication system having a Bluetooth transmit chain and a WLAN receive chain. A signal sampled from the Bluetooth transmit chain is gain and phase adjusted to offset interference in the WLAN receive chain. A quadrature phase shifter may be used to generate quadrature components of the sampled signal that are selectively combined to achieve a desired phase adjustment. The phase shifter may be stabilized by a variable capacitor. These techniques may be extended to MIMO systems.

Abstract translation: 本公开描述了在具有蓝牙发射链和WLAN接收链的无线通信系统中提供主动干扰消除的技术。 从蓝牙发射链采样的信号是增益和相位调整以抵消WLAN接收链中的干扰。 正交移相器可以用于产生被选择性地组合以获得期望的相位调整的采样信号的正交分量。 移相器可以由可变电容器稳定。 这些技术可以扩展到MIMO系统。