Title :
Distance enumerator analysis for multi-user codes
Author :
Guanghui Song ; Jun Cheng
Author_Institution :
Dept. of Intell. Inf. Eng. & Sci., Doshisha Univ., Kyoto, Japan
fDate :
June 29 2014-July 4 2014
Abstract :
A distance enumerator analysis is given for multiuser codes over a Gaussian multiple-access channel (MAC). A multi-user code distance is defined as the Euclidean distance between two multi-user codewords after their inter-user super-position caused by MAC. By employing a user-interleaving and a user-scrambling, a multi-user code ensemble is defined, and its distance enumerator is calculated as a concatenated multiple single-user codes and a superposition code.
Keywords :
Gaussian channels; concatenated codes; geometry; multiuser channels; Euclidean distance; Gaussian multiple-access channel; MAC; concatenated multiple single-user codes; distance enumerator analysis; multiuser code distance; multiuser code ensemble; multiuser codewords; superposition code; Decoding; Encoding; Iterative decoding; Multiaccess communication; Receivers; Vectors;
Conference_Titel :
Information Theory (ISIT), 2014 IEEE International Symposium on
Conference_Location :
Honolulu, HI
DOI :
10.1109/ISIT.2014.6875412
