EURASIP JASP
2006
Optimum Wordlength Search Using Sensitivity Information
K. Han and B. Evans
EURASIP Journal on Advances in Signal Processing, vol. 2006, no. 1, pp. 1–14
Energy- and Resource-Efficient Computing
Research question
Earlier computing research addressed numerical precision, platform energy, interference measurement, and design-space exploration through specialized methods and experiments. This thread preserves those contributions alongside later measurements of energy and execution costs for on-device AI.
Contributions over time
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2000–2009
Fixed-point and wordlength optimization
Sensitivity-guided wordlength search trades numerical output error against implementation complexity. Related work reduces data wordlength in DSP software and automates floating-point to fixed-point transformation. A later book collects this signal-processing work.
Han and Evans, EURASIP JASP 2006 · Han et al., Asilomar 2006 · Han et al., IEEE SiPS 2004 · Han et al., IEEE ISCAS 2001 · Han and Evans, Book 2009
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2008
Identifying interconnect interference
A bicoherence-based measurement study identifies high-speed digital interconnects in platform radio-frequency emissions.
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2009–2013
Low-power display subsystems
Checksum-based image-change detection reduces display traffic for low-motion content. A separate hybrid DRAM and phase-change-memory frame buffer exploits read-dominant content; related work studies adaptive touch sampling.
Han et al., IEEE ICCD 2009 · Han et al., ISLPED 2013 · Min et al., IEEE SysCon 2015
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2015–2016
Collaborative power and quality modeling
Collaborative CAD work develops learning-based models of black-box hardware power, a polyhedral-based SystemC flow for low-power design-space exploration, and statistical models of approximate-hardware quality.
Lee et al., IEEE/ACM ICCAD 2015 · Zuo et al., IEEE/ACM ICCAD 2015 · Lee et al., ISQED 2016
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2023–2026
Energy and latency of on-device AI
Later work measures and predicts AI energy on edge devices, profiles on-device language-model latency, and uses energy predictors in neural-architecture search.
Tu et al., ACM/IEEE SEC 2023 · lm-Meter, ACM/IEEE SEC 2025 · GreenAuto, ACM HotMobile 2025
Systems & evidence
- Wordlength studies evaluate signal-processing designs; checksum-based display work includes an FPGA prototype; the hybrid frame buffer uses display-content and energy models. (Han and Evans, EURASIP JASP 2006; Han et al., IEEE ICCD 2009; Han et al., ISLPED 2013)
Representative publications
A curated selection. Citations above link to each paper; see the full publication list for all work.
ISLPED
2013
A hybrid display frame buffer architecture for energy efficient display subsystems
K. Han, A. Min, N. Jeganathan, and P. Diefenbaugh
International Symposium on Low Power Electronics and Design (ISLPED), Beijing, China
IEEE ICCD
2009
Using checksum to reduce power consumption of display systems for low-motion content
K. Han, Z. Fang, P. Diefenbaugh, R. Forand, R. Iyer, and D. Newell
IEEE International Conference on Computer Design (ICCD), Lake Tahoe, CA, USA
ICCDCS
2008
Identification of high speed jittered digital interconnects using bicoherence spectra
K. Han, K. Tinsley, and J. Aguilar-Torrentera
International Caribbean Conference on Devices, Circuits and Systems (ICCDCS), Cancun
IEEE/ACM ICCAD
2015
Learning-based power modeling of system-level black-box IPs
D. Lee, T. Kim, K. Han, Y. Hoskote, L. John, and A. Gerstlauer
IEEE/ACM International Conference on Computer-Aided Design (ICCAD), Austin, TX, USA
IEEE/ACM ICCAD
2015Best Paper Award
A polyhedral-based SystemC modeling and generation framework for effective low-power design space exploration
W. Zuo, W. Kemmerer, J. Lim, L. Pouchet, A. Ayupov, T. Kim, K. Han, and D. Chen
IEEE/ACM International Conference on Computer-Aided Design (ICCAD), Austin, TX, USA