Cramer-Rao bounds of SNR estimates for BPSK and QPSK modulated signals

被引:109
作者
Alagha, NS [1 ]
机构
[1] EMS Technol Canada, St Anne De Bellevue, PQ H9X 3R2, Canada
关键词
Cramer-Rao bound; Gaussian noise; parameter estimation; phase-shift keying;
D O I
10.1109/4234.901810
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
We derive Cramer-Rao lower bounds (CRLB's) for the estimation of signal-to-noise ratio (SNR) of binary phase-shift keying (BPSK) and quaternary phase-shift keying (QPSK) modulated signals. The received signal is corrupted by additive white Gaussian noise (AWGN), The lower bounds are derived for non-data-aided estimation where the transmitted symbols are unknown at the receiver. The bounds are compared to those for data-aided estimations (known symbols at the receiver). It is shown that at low SNR there is a significant difference between the bounds for non-data-aided and data-aided estimations.
引用
收藏
页码:10 / 12
页数:3
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