ABSTRACT
Estimation of average power consumption is one of the main concerns in today’s VLSI (very large scale integrated) circuit and system design [18,19]. This is mainly due to the recent trend towards portable computing and wireless communication systems. Moreover, the dramatic decrease in feature size, combined with the corresponding increase in the number of devices in a chip, make the power density larger. For a portable system to be practical, it should be able to operate for an extended period of time without the need to recharge or replace the battery. In order to achieve such an objective, power consumption in portable systems has to be minimized.
