Frequency scaling based thermally tolerable Wi-Fi Enable 32-bit ALU design on 90nm FPGA

Abstract

In this paper, Wi-Fi Enable ALU on 90nm based Virtex-4 FPGA is analyzed using thermal scaling and frequency scaling. It is Wi-Fi enable because we are operating our ALU with frequencies of different IEEE 802.11 Wi-Fi Channel. Frequency scaling and temperature scaling results in power consumption variation and finally saving of energy. Clock power, logic power, signal power, IOs power, leakage power all are dependent on frequency and temperature. The ALU is analyzed to work efficiently at Wi-Fi channel ah, having frequency around 0.9GHz. We are also achieving reduction in range of 30-60% for leakage power using frequency scaling and thermal scaling. For further reduction of power dissipation at high frequency range, we are also using different Clock Gating techniques.