How to optimize consumer GPS systems within the electronic equipment

Figure 1. The traditional hardware-based GPS module RF receiver and baseband processor. Such modules can be provided to the host processor through a comprehensive evaluation of the positioning data, which can simplify the RF subsystem development.
 
However, the consumer electronics applications tend to be too concerned about the cost, and therefore can not afford the cost of such a hardware module. Moreover, as position tracking is a secondary function of such equipment, or to make the device more popular add-ons, it is not possible for it and add more components to increase the bill of materials (BOM), resulting in the final sales price than expected.

Optimized software-based GNSS systems
 
To increase consumer electronic devices, software-based GNSS capabilities, the lack of RF experience for developers who may be terrible. In fact, the optimization of RF receivers are still areas of OEM modules, and as long as necessary to follow the reference design and design-related recommendations, you can get good results. The only difference is that now the main processor receives the baseband signal, rather than (from the stand-alone GNSS receiver module) or the location data (from the hardware correlator GNSS) for pseudo-range (pseudo-range) measurement data, but also the receiver without the need for RF or baseband software for any development or improvement. Designers actually have to face the optimization problem is how to better integrate baseband processing software in the existing devices. This involves many design and implementation of the trade-off problem and needs to be taken into account (including the worst working conditions, with minimal power consumption to mai