Title :
Energy-scalable OFDM transmitter design and control
Author :
Debaillie, Björn ; Bougard, Bruno ; Lenoir, Gregory ; Vandersteen, Gerd ; Catthoor, Francky
Author_Institution :
IMEC, Leuven
Abstract :
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
Keywords :
OFDM modulation; energy conservation; energy management systems; radio transmitters; OFDM transmitter design; analog transmitter; broadband wireless communications; circuit reconfiguration; circuit-level processing techniques; energy efficiency scalability; energy-scalable design; energy-scalable reconfigurable transmitter; orthogonal frequency division multiplexing; signal processing techniques; system-level energy management; Broadband communication; Circuits; Communication system control; Costs; Energy efficiency; Energy measurement; OFDM modulation; Signal processing; Transmitters; Wireless communication; Design; Energy Management; Energy-aware design; Energy-scalability; Measurement; OFDM; Performance; Theory;
Conference_Titel :
Design Automation Conference, 2006 43rd ACM/IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
1-59593-381-6
DOI :
10.1109/DAC.2006.229288
