The Effects of the Radio Frequency Front-End onto Signal Estimation

L. Marti

Abstract:	A Software Radio implementation with Block-processing techniques has numerous advantages over a conventional receiver architecture. It facilitates acquisition in the frequency domain, non-stationary time frequency analysis, and flexible weak signal detection schemes [1]. As a result, the Software Radio is a good platform for Global Position System (GPS) signal anomaly detection. For the purpose of signal quality monitoring it is essential to be able to distinguish if a signal anomaly is receiver-induced or existent in the received signal. Thus it is of great importance to evaluate the performance of the signal parameter estimators. Any software radio implementation requires a hardware front-end, which conditions the incoming GPS signal to a format which allows digitization by an Analog-to-Digital Converter (ADC). The front-end modifies the received GPS signals, which influences the signal parameter estimators. This paper addresses front-end induced errors and derives the statistics of the signal parameter estimators that are affected by the front-end.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	2543 - 2552
Cite this article:	Marti, L., "The Effects of the Radio Frequency Front-End onto Signal Estimation," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 2543-2552.
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