Advanced System Analysis and Survey on the GPS Receiver Front End

A fully integrated GPS receiver system can enable unique system capabilities by synthesizing both receiver front end and baseband on the same chip, leading to lower area overhead and higher integration. A survey on the GPS receiver system that focuses on front end design is presented in the paper. The first section discusses the various global navigation satellite system (GNSS), followed by the GPS working section. Afterwards, the paper discusses the previous works on the GPS receiver front end design. It provides a detailed survey and classification of various receiver architecture, including the LNA, mixer, filter, and ADC topologies. Besides, several image rejection techniques are presented for more than 50 GPS receivers. The various performance parameters of the GPS receiver front end in the literature are presented with the graphical view in the state-of-the-art discussion section. This literature survey provides the most extensive compilation to date of the various topologies, techniques and explains their implementation in the GPS receiver system. A new figure of merit that includes all the system parameters is proposed. The FOM can be an excellent reference to enhance the research work in the field of GPS receivers. In the end, the paper describes the possible research scope and challenges associated with the design of the GPS receiver front end.