SNR-Aided Accurate Phase Estimation in 1-Bit Software-Defined Receiver

Abstract

This work investigates the high-accuracy phase discriminator in 1-bit software-defined receiver (SDR) for three signal-to-noise ratio (SNR) ranges: low SNR, high SNR and moderate SNR.

EKF-based Carrier Tracking in One-bit Quantized GNSS Receiver

“…For moderate-SNR applications, the SAPD was proposed to compensate the noise effect [9], which is given by…”

“…Equation (24) can also be represented as a power series [9]. However, both of them are inconvenient to be used in real time applications due to their computational complexities.…”

“…To reduce the estimation error, some new discriminators have been proposed based on the property of the quantized signal [5][6][7][8][9]. A digital phase discriminator (DPD) using the 1-bit quantized signal was first proposed in [5].…”

“…The accuracy of the discriminator can be improved by increasing the sampling rate. Then the updated versions of the digital phase discriminator were proposed, including a noise balanced digital phase discriminator (NB-DPD) [6], a robust digital phase discriminator (RDPD) [8], and a SNR aided accuracy phase discriminator (SAPD) [9].…”