Cramer-Rao Bound for NDA SNR Estimates of Square QAM Modulated Signals

Author

Bellili, Faouzi ; Stéphenne, Alex ; Affes, Sofiene

Author_Institution

INRS-EMT, Montreal, QC

fYear

2009

fDate

5-8 April 2009

Firstpage

1

Lastpage

5

Abstract

In this paper, we derive analytical expressions for the inphase/quadrature Cramer-Rao lower bounds (I/Q CRLB) for the non-data-aided (NDA) signal-to-noise ratio (SNR) estimation of square quadrature amplitude modulated (QAM) signals. The channel is supposed to be slowly time-varying so that it can be assumed constant over the observation interval. The signal is assumed to be corrupted by additive white Gaussian noise (AWGN). We will demonstrate that the shape of the bounds differs greatly as the modulation order changes.

Keywords

AWGN channels; quadrature amplitude modulation; QAM signal; additive white Gaussian noise; channel; estimation of square quadrature amplitude modulated signal; inphase/quadrature Cramer-Rao lower bounds; nondata-aided signal-to-noise ratio; AWGN; Additive white noise; Amplitude estimation; Amplitude modulation; Binary phase shift keying; Communications Society; Quadrature amplitude modulation; Quadrature phase shift keying; Signal analysis; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE

Conference_Location

Budapest

ISSN

1525-3511

Print_ISBN

978-1-4244-2947-9

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2009.4917650

Filename

4917650