Lookup Table-Based Low-Power Implementation of Multi-channel Filters for Software Defined Radio
Subhendu Kumar Sahoo, Pramod Kumar Meher · 2017
In this work we present a low power multi-channel finite impulse response (FIR) filter using look-up table (LUT) approach. We have been able to reduce the LUT size by a factor of 8 over the conventional LUTs using Booth recoding, odd multiple storage and asymmetric product techniques. The proposed design provides 22%, 30% and 33% less duration of cycle period and 14%, 32% and 35% less energy per sample over the recently proposed design for multi-channel filter for tap size 4, 8 and 16 respectively. This design would therefore be highly useful for the implementation of multi-channel filters for certain applications like software defined radio systems.