Abstract

The Bayesian parameter estimation problem using a single-bit dithered quantizer is considered. This problem arises, e.g., for channel estimation under low-precision analog-to-digital conversion (ADC) at the receiver. Based on the Bayesian Cramér-Rao lower bound (CRLB), bounds on the mean squared error are derived that hold for all dither strategies with strictly causal adaptive processing of the quantizer output sequence. In particular, any estimator using the binary quantizer output sequence is asymptotically (in the sequence length) at least 10 10(π/2)≈ 1.96 dB worse than the minimum mean squared error estimator using continuous observations, for any dither strategy. Moreover, dither strategies are designed that are shown by simulation to closely approach the derived lower bounds.

Original languageEnglish (US)
Article number6168857
Pages (from-to)2713-2726
Number of pages14
JournalIEEE Transactions on Signal Processing
Volume60
Issue number6
DOIs
StatePublished - Jun 2012

Keywords

  • Channel estimation
  • Parameter estimation
  • Quantization

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering

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