发明授权
US08213536B2 Low complexity systems and methods for peak-to-average ratio (PAR) reduction using reserved tones 有权
低复杂度系统和使用保留音调的峰值平均比(PAR)减少的方法

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