Case study: the design of a mixed-signal global positioning system receiver using multichip module packaging
In a collaborative project, the Mayo Foundation and Motorola have developed a fully functional miniaturized global positioning system (GPS) receiver using laminated multichip modules (MCM-L). This paper presents the system requirements, design constraints, substrate selection criteria and description, design approach, assembly, and test of a fully operational GPS receiver to describe the generic mixed-signal design techniques used during the development cycle.
This paper addresses the problem of channel and propagation delay estimation in asynchronous DS/CDMA systems. We consider the uplink connection in DS/CDMA with long spreading codes. The MIMO stochastic gradient algorithm proposed in [6] is estimating a linear combination of the channel impulse responses and the propagation delays. This estimate suffices for the equalization purposes. The propagation delays are estimated with a simple matching scheme.