NDLI: An energy-efficient OFDM ultra-wideband digital radio architecture

Content Provider	IEEE Xplore Digital Library
Author	Sung-Won Chung Seung-Yoon Lee Kyu-Ho Park
Copyright Year	2004
Description	Author affiliation: Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea (Sung-Won Chung; Seung-Yoon Lee; Kyu-Ho Park)
Abstract	We propose an energy efficient architecture, utilizing peak-to-average power ratio (PAR) information in both transmitter and receiver side. It is identified that the energy consumption of digital-to-analog (D/A) and analog-to-digital (A/D) conversion is the most critical bottleneck in realizing energy efficient digital radios with high data rate. Therefore, our transmitter reduces requantization noise in D/A conversion by digital OFDM symbol up-scaling before D/A conversion and analog OFDM symbol inverse-scaling after D/A conversion. Our receiver reduces quantization noise in A/D conversion by fine tracking automatic gain control (AGC) for each OFDM symbol, after coarse AGC is performed. The proposed architecture reduces a power consumption of D/A and A/D conversion by up to 24% while providing the same performance as the conventional one.
Sponsorship	The Inst. of Electr. and Electron. Eng. The IEEE Signal Processing Soc. The IEEE Circuits and Syst. Soc
Starting Page	211
Ending Page	216
File Size	299436
Page Count	6
File Format	PDF
ISBN	0780385047
DOI	10.1109/SIPS.2004.1363051
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-10-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Energy efficiency OFDM Ultra wideband technology Digital communication Peak to average power ratio Radio transmitters Energy consumption Noise reduction Receivers Quantization
Content Type	Text
Resource Type	Article

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