Abstract

The GPS C/A-code is the most widely utilized GNSS signal today. The C/A-code design includes (1) a short (length-1023) spreading code that repeats every 1 ms and (2) a low (50 bps) data rate. These two characteristics can lead to undesired interactions between received C/A-code signals within user equipment. In this paper, a simple model is derived for predicting the impact of C/A-code self-interference on receiver performance. The accuracy of the model in predicting C/A-code self-interference is assessed through the use of a high-fidelity GPS receiver software simulation.

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