Title :
The radiometer and its practical implementation
Author_Institution :
U.S. Army Res. Lab., Adelphi, MD, USA
fDate :
Oct. 31 2010-Nov. 3 2010
Abstract :
The radiometer or energy detector is useful in detecting target signals about which little is known. A practical radiometer is described and analyzed for the AWGN and Rayleigh channels with and without diversity combining. The practical implications of bandwidth, the number of samples processed, and imperfect noise-power estimation are examined. The radiometer has been criticized because of its alleged sensitivity to imperfect noise-power estimates. Conditions under which the noise-power estimation error is small are discussed. It is shown that the effects of this error on the probability of detection of the target signal can be kept small.
Keywords :
AWGN channels; Rayleigh channels; probability; radiometers; signal detection; AWGN channels; Rayleigh channels; diversity combining; energy detector; noise-power estimation error; probability; radiometer practical implementation; target signal detection; Approximation methods; Diversity reception; Equations; Noise; Radiometry; Rayleigh channels;
Conference_Titel :
MILITARY COMMUNICATIONS CONFERENCE, 2010 - MILCOM 2010
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-8178-1
DOI :
10.1109/MILCOM.2010.5680312
