Study of a Pilotless Fine Frequency Estimator Algorithm in Burst-mode PSK Transmissions

Cassio C Rodrigues, Claudio Dias, Gustavo Fraidenraich, Eduardo de Lima

DOI: 10.14209/sbrt.2019.1570559146

Evento: XXXVII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2019)

Keywords:

Abstract

This work investigated the frequency estimation method and proposed an improved pilotless fine frequency estimator (FFE) algorithm for burst-mode (PSK) transmissions. The algorithm is data-aided (DA) and has an approach based on approximated Maximum Likelihood (ML). The simulations results obtained show us its estimation accuracy is close to the Modified Cramer-Rao Bound (MCRB) for a Signal-to-Noise (SNR) as low as 0 dB. Compared with theoretical solutions and based on the results obtained here, the estimator proposed is the best candidate for implementation in hardware. The algorithm is simple and easy to be implemented in digital form. The estimator was developed targeting a digital receiver for the DVB-S2 standard, that is under development in 65nm CMOS technology, and with minor changes it can also support DVBS2X receivers or communication system that requires the same constraints for low SNR (LSNR).

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