A reconfigurable multistandard GNSS receiver setup operating in L1/L2 bands
Résumé
Global Navigation Satellite System (GNSS) is widely used around the world. It includes services provided by GPS, GLONASS, GALILEO and BEIDOU. GNSS-based applications use GNSS receivers to collect position, velocity and time information. Thus, the implementation of a multistandard GNSS receiver brings enormous benefits to consumers of wireless services. Besides, developing a reconfigurable receiver allows reducing significantly its power consumption. This paper presents a reconfigurable GNSS receiver setup based on the subsampling architecture. Starting from basic design metrics such as noise figure, gain and dynamic range and receiver frequency planning, commercial components were carefully selected, resulting in a prototype solution. The proposed setup aims to manage the whole GNSS signals and retain high performance by the implementation of reconfigurable blocks.The receiver RF front-end was modeled and simulated on ADS software. The obtained performances were conforming to the design specifications and validate our choices