Abstract:
In a serial communication system having a device including a receiver detection module, this specification is directed to systems and methods for selectively reducing the power consumed by the receiver detection module, preferably when the device is operating in a low power mode. In some embodiments, a signal detection module is configured to receive a control signal from the transmitter of a device at the other end of the communications link to control the operation of the receiver detection module. The control signal may be in-band or may be transmitted on a sideband of the serial link.
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.