Thesis - Department of Electronic & Computer Engineering

I kat steady state, f ( v k) = ----------- , f( v1 – a j) = 0.Fig. 2.2 shows the three operation regimes on a-b plane forδ 1= 0.1. The upper1 – aline corresponds to b = ------------- , and the lower line corresponds to1 – δ 1b = ( 1 – a) ( 1 – δ 1). The region above the upper line is the VWTA region, below thelower line is the WSA region, in between is the WTA region. From another point ofview, given ab , , define the system resolution to be δ = max⎛-------------------- a+ b – 1 ,1 --------------------– a – b ⎞ .⎝ b 1 – a ⎠The minimum relative difference that the WTA network can discern is lower boundedby δ. In other words, it exhibits WTA behavior when δ 1 > δ .1.4Operation Regimes1.21VWTA0.8WTAb0.60.4WSA0.200 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1aFig. 2.2 Operation regions on a-b plane8