A low bias algorithm to estimate negative SNRs in an AWGN channel
Bin Li, Robert A. DiFazio, Ariela Zeira · IEEE Communications Letters · 2002
Signal-to-noise ratio (SNR) is an important parameter in many receivers. In this letter, we derive a maximum-likelihood estimate of the amplitude of a binary phase-shift keying modulated signal and develop an iterative SNR search algorithm. Low bias is achieved for low SNR.