Cognitive Radio RF: Overview and Challenges

Table 2

CPU-ARM perforamnces.

Technology	2007-8	2009-10	2011-12	Improvement
ARM Processor	ARM11 470–700 DMIPS	Cortex-A8 1,200–2,000 DMIPS	Dual Cortex-A9 5,000 + DMIPS	10× + SMP
Ext. display	VGA	XGA	WUXGA + HDMI	8× + HDMI
Video	VGA–30 fps	720–30 fps	1080p-30 fps	7×
3D graphics	2 Mtri/s OpenGL ES1.1	10 + Mtri/s OpenGL ES2.0	20+ Mtri/s OpenGL ES2.0	10× + Pgm. shaders
Imaging	3–5 MP	8–12 MP	16–20 MP	7×
Audio	15 hrs	40 hrs	140+ hrs	10×
DDR memory	128–256 MB	256–512 MB	1–2 GB	8×
Mass storage	8–16 GB	16–32 GB	64–128 GB	8×
Process	90 nm	65/45 nm	45 nm/beyond	3+ nodes