IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Multi-Carrier Digital Communications: Theory and Applications of Ofdm
Multi-Carrier Digital Communications: Theory and Applications of Ofdm
From myth to methodology: cross-layer design for energy-efficient wireless communication
Proceedings of the 42nd annual Design Automation Conference
Cross-layer power management in wireless networks and consequences on system-level architecture
Signal Processing - Special section: Advances in signal processing-assisted cross-layer designs
EURASIP Journal on Wireless Communications and Networking
Pro-VIZOR: process tunable virtually zero margin low power adaptive RF for wireless systems
Proceedings of the 45th annual Design Automation Conference
Challenges and enabling technologies for energy aware mobile radio networks
IEEE Communications Magazine
Low-power adaptive RF system design using real-time fuzzy noise-distortion control
Proceedings of the 2012 ACM/IEEE international symposium on Low power electronics and design
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Orthogonal Frequency Division Multiplexing (OFDM) is the modulation of choice for broadband wireless communications. Unfortunately, it comes at the cost of a very low energy efficiency of the analog transmitter. Numerous circuit-level and signal processing techniques have been proposed to improve that energy efficiency. However more disruptive improvement can be achieved at system-level, capitalizing on energy-scalable design and circuit reconfiguration to match the user requirements and operation environment. We describe the design of such an energy-scalable reconfigurable transmitter as well as its control strategy. Based on measurement carried out on the physical realization of this transmitter, the benefit of system-level energy management is shown. Energy-efficiency scalability ranges over 30%, which translates in an average system-level energy improvement of up to 40% compared to a non-scalable system.