Title :
Enhanced UMTS CS-CDMA uplink transmission using turbo super-orthogonal codes
Author :
Souto, Nuno ; Silva, João Carlos ; Rodrigues, A. ; Cercas, Francisco ; Correia, Américo
Author_Institution :
Instituto de Telecomunicacoes, Inst. Superior Tecnico, Lisboa, Portugal
Abstract :
The paper focuses on the use of low rate turbo super-orthogonal codes for performing combined coding and spreading in an uplink transmission for the UMTS system. This type of scheme, where a low rate channel code is employed alone for bandwidth expansion, is designated as code-spread CDMA. A stand-alone simulator was built so that the performances of the already standardized DS-CDMA scheme and the proposed code-spread CDMA could be evaluated and compared. The modifications to the current UMTS structure in order to accommodate this new scheme are also discussed.
Keywords :
3G mobile communication; channel coding; code division multiple access; mobile radio; spread spectrum communication; turbo codes; DS-CDMA; channel code; enhanced UMTS code-spread CDMA uplink; turbo codes; turbo super-orthogonal codes; 3G mobile communication; Bandwidth; Downlink; Europe; Interference cancellation; Iterative decoding; Multiaccess communication; Performance evaluation; Telecommunications; Turbo codes;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1387974
