Title :
1-cc Computer: Cross-Layer Integration with 3.4-nW/bps Link and 22-cm Locationing
Author :
Ono, G. ; Nakagawa, T. ; Fujiwara, R. ; Norimatsu, T. ; Terada, T. ; Miyazaki, M. ; Suzuki, K. ; Yano, K. ; Ogata, Y. ; Macki, A. ; Kobayashi, S. ; Koshizuka, N. ; Sakamura, K.
Author_Institution :
Hitachi Ltd., Tokyo
Abstract :
The first 1-cc computer (OCCC) which integrates a sensor, a wireless transceiver, a computing engine and a battery is demonstrated. Cross-layer innovation includes SPIKE control, which achieves record-low 3.4-nW/bps power with 3-ms UWB current control (one order lower than those of reported). Another proposal is communication-location integration (CLI), which achieves 22-cm location accuracy with 1.3% area overhead. Fabricated OCCC is verified to operate as designed.
Keywords :
microcontrollers; mobile computing; portable computers; transceivers; ultra wideband communication; 1-cc computer cross-layer integration; SPIKE control; UWB current control; battery operated computers; communication-location integration; computing engine; integrated sensor; location accuracy; microcontroller unit; wireless transceiver; Batteries; Communication system control; Computer networks; Energy consumption; Laboratories; Pervasive computing; Power supplies; Samarium; Size control; Utility programs;
Conference_Titel :
VLSI Circuits, 2007 IEEE Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-4-900784-05-5
Electronic_ISBN :
978-4-900784-05-5
DOI :
10.1109/VLSIC.2007.4342778
