Baseband cancellation of platform radio interference

摘要

Briefly, in accordance with one or more embodiments, a platform may comprise a receiver to receive a signal that includes an error in the received signal due to a noise signal generated in the platform, and a processor configured to calculate a noise vector from a source of the noise signal and to send the noise vector to the receiver, The receiver may include a digital signal processor configured to estimate an error vector based at least in part on the noise vector and to subtract the estimated error vector from the received signal to cancel the noise signal from the received signal. The noise cancelled from the received signal may include platform noise generated by a bus, a memory circuit, a clock, a power supply, a circuit ground or integrated circuit substrate, or input/output circuit of the platform.

主权项

1. A platform, comprising:
a bus circuit to transmit a digital bus signal via a bus of the platform, wherein the digital bus signal propagates as radio-frequency (RF) noise in the platform; a receiver to receive a signal that includes an error in the received signal due to RF coupling of the digital bus signal between the bus and the receiver; a processor coupled to the bus circuit and configured to calculate a noise vector from the digital bus signal and to send the noise vector to the receiver via a lower speed link external to the processor and the receiver; and a digital signal processor in the receiver separate from the processor and configured to receive the noise vector from the processor to estimate an error vector based at least in part on the noise vector and to subtract the estimated error vector from in-phase and quadrature components of a baseband version of the received signal to cancel the digital bus signal from the received signal.