Methods and systems for noise and interference cancellation

US8724731B2 · kind B2 · utility

Assignee

• Intersil Americas LLC · US

Inventors

• Wilhelm Steffen Hahn · Schonach, DE
• Wei Chen · Sunnyvale, US

Key dates

• Filing date: Jan 26, 2011
• Grant date: May 13, 2014
• Expiry date: Mar 14, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/525
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Signals propagating from an aggressor communication channel can cause detrimental interference in a victim communication channel. One or more noise cancellers can generate an interference compensation signal to suppress or cancel the interference based on one or more settings. A controller can execute algorithms to find preferred settings for the noise canceller(s). The controller can use a feedback signal (e.g., receive signal quality indicator) received from a victim receiver during the execution of the algorithm(s) to find the preferred settings. One exemplary algorithm includes sequentially evaluating the feedback resulting from a predetermined list of settings. Another algorithm includes determining whether to move from one setting to the next based on the feedback values for both settings. Yet another algorithm includes evaluating a number of sample settings to determine which of the sample settings result in a better feedback value and searching around that sample setting for a preferred setting.