Title :
An improved 8 × 8 approximately universal code with the large normalized diversity product
Author :
Chen, Ming-Yang ; Li, Hua-Chieh ; Cioffi, John M.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA
Abstract :
When an approximately universal code is designed with cyclic division algebras, the normalized diversity product can be intrinsically increased by a small integer non-norm element. While 2 + i has been the smallest integer non-norm element in all known 8 × 8 designs over QAM, this paper presents another new 8 × 8 code with the smaller non-norm element 1 + i over QAM.
Keywords :
algebra; codes; quadrature amplitude modulation; QAM; cyclic division algebras; large normalized diversity product; small integer nonnorm element; universal code; Algebra; Block codes; Cost accounting; Diversity reception; Galois fields; Mathematics; Quadrature amplitude modulation; Sufficient conditions; Transmitting antennas;
Conference_Titel :
Information Theory Proceedings (ISIT), 2010 IEEE International Symposium on
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-7890-3
Electronic_ISBN :
978-1-4244-7891-0
DOI :
10.1109/ISIT.2010.5513723
