Computing L2 and H2 Norms
§Hypothetical input-output experiments:
• Apply the impulsive input d(t)ei (d(t) is the unit impulse and ei is the ith standard basis vector) and denote the output by zi (t)( = g(t)ei ). Then ziÎ L2+ ( assuming D = 0) and
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• Can be used for nonlinear time varying systems.