Skip to main content

Table 3 Output bit error rate computation

From: Power-optimized log-based image processing system

Number of output bits Average bit change error (for 215test sets)
Wallace tree multiplier Logarithm based multiplier
Logarithm word size in bits
6 bits 9 bits 12 bits 15 bits 18 bits 21 bits
22 12.56 18.56 15.78 14.08 9.58 3.56 1.89
20 11.87 16.59 13.86 11.18 7.38 1.95 0.76
18 11.85 13.48 11.85 9.87 3.85 0.78 0.54
16 11.34 10.56 10.03 7.65 0.96 0.53 0.02
15 10.93 10.06 9.53 4.86 0.08 0.12 0.0085
13 10.58 8.85 7.96 2.95 0.03 0.0085 0.0053
11 10.87 7.32 4.58 0.08 0.01 0.0031 0.0017