A Smart Format Floating-point Engine for GNSS Receiver

Hongbin Zhou, Rendong Ying, Peilin Liu, Ji Kong

Abstract:	As the development of multi-mode Global Navigation Satellite System (GNSS) and growing location-based applications, the demands for power consumption and performance efficiency of a GNSS receiver are increasingly high. In common GNSS design energy has been wasted since data format was not optimized and specified on the basis of variable application accuracy. To take advantage of the floating-point operation and decrease its power consumption at the same time, this paper proposes a Smart Format Floating-point Engine (SF-FPE) for GNSS receiver, targeting to provide variable format floating-point operations specific for the target module and application scenarios. Implemented in 90 nm CMOS technology, the design can operate at a frequency of 200 MHz and required area could be as small as 0.06 mm2. The peak energy efficiency could be as high as 45GFlops/W.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	2301 - 2306
Cite this article:	Zhou, Hongbin, Ying, Rendong, Liu, Peilin, Kong, Ji, "A Smart Format Floating-point Engine for GNSS Receiver," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 2301-2306.
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