Ingress cancellation

Ingress cancellation is a method for removing narrowband noise from an electromagnetic signal using a digital filter.^[1] This type of filter is used on hybrid fiber-coaxial broadband networks.^[2]^[3]

If a carrier appears in the middle of the upstream data signal, ingress cancellation can remove the interfering carrier without causing packet loss.^{[citation needed]}

Ingress cancellation also removes one or more carriers that are higher in amplitude than the data signal. Ingress cancellation eventually will break if the in-channel ingress gets too high.^{[citation needed]}

References

^ Broadband Last Mile; Access Technologies for Multimedia Communications. CRC Press. 2018. pp. 290–299. ISBN 9781351836685.
^ Lusky, I.; Geri, N.; Reznic, Z.; Bitran, Y. (2002). "Adaptive algorithms for choosing transmission parameters in dynamic channel conditions" (PDF). 2002 14th International Conference on Digital Signal Processing Proceedings. 1. IEEE: 53–56.
^ Popper, A.; Buda, F.; Sari, H. (2002). "Ingress noise cancellation for the upstream channel in broadband cable access systems". 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333). Vol. 3. IEEE. pp. 1808–1812. doi:10.1109/ICC.2002.997160. ISBN 0-7803-7400-2. S2CID 22576844.

References

See also