DocumentCode
395329
Title
A new look at the informational gain of soft decisions
Author
Lexa, Michael A. ; Johnson, Don H.
Author_Institution
Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA
Volume
4
fYear
2003
fDate
6-10 April 2003
Abstract
The paper develops a new systematic method of studying the benefits of 2 bit soft decisions by applying the concepts of information processing theory. We quantify performance in terms of the information transfer ratio and demonstrate the performance gain over hard decision detectors in several noise environments. In addition, we show that likelihood ratio tests maximize the information transfer ratio, and we propose a method of optimizing threshold values for the 2 bit soft decision detector.
Keywords
decision theory; signal detection; hard decision detectors; information processing theory; information transfer ratio maximization; informational gain; likelihood ratio tests; soft decisions; threshold value optimization; Detectors; Information processing; Optimization methods; Performance gain; Probability distribution; Probes; Signal processing; Signal to noise ratio; Testing; Working environment noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
ISSN
1520-6149
Print_ISBN
0-7803-7663-3
Type
conf
DOI
10.1109/ICASSP.2003.1202531
Filename
1202531
Link To Document