Scaled signal processing elements for reduced filter tap noise
j j j j k k kkmaxmax j An adaptive transversal filter having tap weights Wwhich are products of corresponding tap coefficients Cand tap gains Mis provided. A filter control loop controls all of the tap coefficients Csuch that an error signal derived from the filter output is minimized. One or more t...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
13.12.2011
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Online Access | Get full text |
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Summary: | j j j j k k kkmaxmax j An adaptive transversal filter having tap weights Wwhich are products of corresponding tap coefficients Cand tap gains Mis provided. A filter control loop controls all of the tap coefficients Csuch that an error signal derived from the filter output is minimized. One or more tap control loops controls a tap gain Msuch that the corresponding tap coefficient Csatisfies a predetermined control condition. For example, |C| can be maximized subject to a constraint |C|≦C, where Cis a predetermined maximum coefficient value. In this manner, the effect of quantization noise on the coefficients Ccan be reduced. Multiple tap control loops can be employed, one for each tap. Alternatively, a single tap control loop can be used to control multiple taps by time interleaving. |
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