11 August 2004Telecoms, Datacoms, Wireless, IoT
Integrated Solutions
Financial (Industry)
A new 2-chipset solution for high sensitivity GPS/AGPS (augmented GPS) receivers capable of indoors acquisition has been released by Fujitsu Microelectronics Europe (FME). The chipset is said to achieve high performance (sensitivity, accuracy and TTFF) with low power and a small PCB footprint. The highly integrated solution consists of a baseband chip and an RF front-end chip (supporting GPS L-band C/A code). The baseband chip interfaces to a host CPU/MCU via a simple serial interface (UART). Capable of operating in both 'autonomous GPS/standalone' mode and 'assisted GPS' mode, the chipset is designed to work in cellular handsets using any air interface such as UMTS/WCDMA, GSM/GPRS, PDC and CDMA technologies. It is versatile in that a receiver can be initially developed as an autonomous GPS receiver and subsequently software-upgraded to AGPS. Fujitsu provides an API software library for interfacing. The acquisition/tracking engine has 44 000 effective correlators, resulting in high indoor sensitivity calibrated to -157,5 dBm and indoor accuracy of less than 20 m. The solution achieves fast TTFF of less than 1 s when hot and around 32 s when cold for outdoors fixes.
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