Title :
Implementation of the cosine law for location awareness system
Author :
Lin, Pei-Ju ; Huang, Yeng-Chang ; Huang, Yu-Jung ; Ker, Ming-Dou
Author_Institution :
Inst. of Electron., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
A proposed UHF RFID location system, based on a known location of the reference tags by applying the cosine theorem to calculus more location information, can provide location-aware services. In this article, the trigonometric cosine and sine functions required in the computation of the law of the cosines are realized using a Coordinate Rotation Digital Computer (CORDIC) based floating-point arithmetic scheme. The implementation of a CORDIC processor based on the IEEE 754 standard for binary floating-point arithmetic is demonstrated. The cosine law is implemented on DE2 circuit board and verified by logic analyzer.
Keywords :
UHF devices; floating point arithmetic; logic analysers; mobile computing; mobility management (mobile radio); radiofrequency identification; CORDIC processor; DE2 circuit board; IEEE 754 standard; UHF RFID location system; binary floating-point arithmetic; coordinate rotation digital computer; cosine law; location awareness system; location-aware service; logic analyzer; radiofrequency identification; reference tags; trigonometric cosine function; trigonometric sine function; Antenna radiation patterns; Computers; Field programmable gate arrays; Hardware; Mobile radio mobility management; Radiofrequency identification; Signal processing algorithms; CORDIC; Location Awareness; RFID; The cosine law;
Conference_Titel :
Microelectronics and Electronics (PrimeAsia), 2010 Asia Pacific Conference on Postgraduate Research in
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-6735-8
Electronic_ISBN :
978-1-4244-6736-5
DOI :
10.1109/PRIMEASIA.2010.5604912
