Will the 1-bit GNSS Receiver Prevail?

M. Stein and J.A. Nossek

Abstract: In the context of satellite-based positioning, the problem of range-estimation with low resolution analog-to-digital conversion (ADC) is considered. While ADC with coarse output resolution degrades the positioning performance of Global Navigation Satellite System (GNSS) receivers, its simplicity allows to realize sampling at high spatial and temporal rates in an energy and hardware efficient way. Therefore, here the achievable range-estimation accuracy of GNSS receive systems with 1-bit ADC resolution, multiple antennas and high receive bandwidths is analyzed. For different scenarios, including multi-path propagation and the presence of broadband interference, we investigate the scaling behavior of the estimation performance when increasing the number of received antennas or the sampling rate. Results for all considered scenarios show that if a moderately higher number of antennas or a moderately faster temporal rate is used, 1-bit GNSS receive systems have the potential to outperform ideal receivers with infinite ADC resolution. This insight emphasizes that receiver architecture with 1-bit ADC has the potential to play an important role for future low-cost receivers as well as for sophisticated energy efficient high-performance GNSS systems.
Published in: Proceedings of IEEE/ION PLANS 2014
May 5 - 8, 2014
Hyatt Regency Hotel
Monterey, CA
Pages: 1033 - 1040
Cite this article: Stein, M., Nossek, J.A., "Will the 1-bit GNSS Receiver Prevail?," Proceedings of IEEE/ION PLANS 2014, Monterey, CA, May 2014, pp. 1033-1040.
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