Ikanos Communications, Inc.

Harish Jethanandani

Patrick Duvaut

Amitkumar Mahadevan

Rahul Garg

Systems and methods for reducing the peak-to-average ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal which reduces the magnitude of peaks in the time-domain signal prior to transmission where the time-domain compensation signals use tones that are reserved for the purpose of reducing the PAR. The reservation of these reserved tones for PAR can be implemented by altering the typical startup procedures in a digital subscriber line (xDSL) system. The use of the reserved tones to reduce the PAR can be implemented using a low complexity algorithm or using an adaptive technique.

Systems and methods for positioning and messaging of reserved tones for peak-to-average ratio (PAR) reduction in DSL systems

Adaptive turbo peak mitigation for peak-to-average ratio (PAR) reduction using reserved tones

Low complexity systems and methods for peak-to-average ratio (PAR) reduction using reserved tones

Systems and methods for reducing the peak-to-average power ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a time-domain compensation signal in the oversampled regime, using tones reserved for PAR reduction. A set of vectors corresponding to PAR tones is generated by processing out-of-phase symbols for each PAR tone to form a span matrix. The span matrix is used to find a best fit of a desired target signal to a time-domain compensation signal comprising only PAR tones.

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Jaipur, India

Harish Jethanandani