Paper Info
Title
Decorrelating (DECOR) transformations for low-power adaptive filters
Abstract
Presented in this paper are decorrelating transformations (referred to as DECOR transformations) to reduce the power dissipation in adaptive filters. The coefficients generated by the weight update block in an adaptive filter are passed through a decorrelating block such that fewer bits are required to represent the coefficients. Thus, the size of the arithmetic units in the filter (F-block) is reduced thereby reducing the power dissipation. The DECOR transform is well suited for narrow-band filters because there is significant correlation between adjacent coefficients. In addition, the effectiveness of DECOR transforms increases with increase in the order of the filter and decrease in coefficient precision. Simulation results indicate reduction in power dissipation in the F-block ranging from 12% to 38% for filter bandwidths ranging from 0.15 ƒs to 0.025 ƒs (where ƒs is the sample rate).
Year
DOI
Venue
1998
10.1145/280756.280923
ISLPED
Keywords
Field
DocType
adjacent coefficient,arithmetic unit,decorrelating block,narrow-band filter,power dissipation,adaptive filter,low-power adaptive filter,weight update block,fewer bit,coefficient precision,decor transformation,adaptive filters,low power electronics,digital filters,decorrelation,short circuit current
Decorrelation,Digital filter,Computer science,Dissipation,Sampling (signal processing),Electronic engineering,Ranging,Adaptive filter,Low-power electronics,Power consumption
Conference
ISBN
Citations 
PageRank 
1-58113-059-7
3
0.84
References 
Authors
8
3
Name
Order
Citations
PageRank
Sumant Ramprasad120218.20
Naresh R. Shanbhag22027205.25
Ibrahim N. Hajj357279.52