Path loss-aware adaptive transmission power control scheme for energy-efficient wireless NoC

Abstract

Wireless Networks-on-Chip (WiNoCs) offer unprecedented advantages to replace the long-distance multi-hop communication bottlenecks of conventional NoCs by augmenting them with a single hop, long-range wireless links in many-core systems. In wireless interfaces (WIs), RF transceiver components are consuming a significant amount of total power budgets to replace the multi-hop communications. Specifically, transmitter accounts a notable portion of overall transmission energy. To improve energy efficiency, we propose the Path Loss-aware Adaptive Transmission Power Control (PATPC) scheme using multi-voltage scaling based on present destination. To implement this, we estimate the required power using path loss model for the on-chip wireless channel. Proposed method is achieved an average energy saving of 53 % for transmitting at half of distance compared with traditional approaches with low silicon overheads.