Title :
On the issue of decoupled decoding of codes derived from quaternion orthogonal designs
Author :
Wysocki, Tadeusz A. ; Wysocki, Beata J. ; Adams, Sarah Spence
Author_Institution :
Dept. of Comput. & Electron. Eng., Univ. of Nebraska - Lincoln, Omaha, NE, USA
Abstract :
Quaternion orthogonal designs (QODs) have been previously introduced as a basis for orthogonal space-time polarization block codes (OSTPBCs). This note will serve to correct statements concerning the optimality of a decoupled maximum-likelihood (ML) decoding algorithm. It will be shown that when compared to coupled decoding, the decoupled decoding is only optimal in certain cases. This raises several open problems concerning the decoding of OSTPBCs.
Keywords :
block codes; maximum likelihood decoding; orthogonal codes; decoupled maximum likelihood decoding algorithm; orthogonal space-time polarization block codes; quaternion orthogonal design; Block codes; Design engineering; Educational institutions; Error correction; Maximum likelihood decoding; Polarization; Quaternions; Space time codes; Statistics; Transmitting antennas; decoupled decoding; maximum-likelihood decoding; quaternion orthogonal design; space-time block code;
Conference_Titel :
Signal Processing and Communication Systems, 2009. ICSPCS 2009. 3rd International Conference on
Conference_Location :
Omaha, NE
Print_ISBN :
978-1-4244-4473-1
Electronic_ISBN :
978-1-4244-4474-8
DOI :
10.1109/ICSPCS.2009.5306355
