Title :
Fading-resistant and MUI-free codes for CDMA systems
Author :
Scaglione, Anna ; Barbarossa, Sergio ; Giannakis, Georgios B.
Author_Institution :
INFOCOM Dept., Rome Univ., Italy
Abstract :
A new class of codes was proposed recently for perfect multi-user interference (MUI) suppression in code division multiple access (CDMA) systems. These so called Lagrange-Vandermonde (LV) codes offer deterministic MUI elimination without channel estimation, and convert frequency selective channels into flat fading channels. In this work, we develop dual CDMA transceivers, naturally termed Vandermonde Lagrange (VL), with the precoder-decoder roles interchanged, in order to improve the system flexibility in the code assignment. We also derive and test nonredundant and redundant techniques for combating the residual flat fading
Keywords :
code division multiple access; codes; decoding; fading channels; interference suppression; land mobile radio; multiuser channels; radiofrequency interference; transceivers; CDMA systems; Lagrange-Vandermonde codes; MUI-free codes; code assignment; code division multiple access; deterministic MUI elimination; dual CDMA transceivers; fading-resistant codes; flat fading channels; frequency selective channels; multi-user interference suppression; nonredundant techniques; precoder-decoder; redundant techniques; third generation mobile communications; 3G mobile communication; Decoding; Europe; Fading; Frequency conversion; Interference suppression; Lagrangian functions; Multiaccess communication; Testing; Transceivers;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.761293
