Title :
A TDMA-based physical layer solution for high-rate synchronous CDMA systems
Author :
Papadimitriou, Panayiotis D. ; Georghiades, Costas N.
Author_Institution :
Res. & Technol., NOKIA Mobile Phones, Irving, TX, USA
Abstract :
The wireless industry´s demand for higher data rates from cellular CDMA systems, makes the use of higher order modulation (e.g. 16-QAM) a necessity. Unfortunately, the high data rate schemes of the current 3G cellular standards don´t work well in wireless channels due to the poor equalization of the highly dense constellations. In this work we look at the performance of a fully-loaded CDMA system when we remove the spreading, if not the scrambling.
Keywords :
cellular radio; code division multiple access; data communication; quadrature amplitude modulation; telecommunication channels; time division multiple access; 16-QAM; 3G cellular standards; TDMA-based physical layer; antenna receivers; cellular CDMA systems; code division multiple access; constellations; data communication; downlink; high data rates; higher order modulation; nonspread communication; quadrature amplitude modulation; synchronous CDMA systems; time division multiple access; wireless channels; Code division multiplexing; Delay estimation; Fading; Interference cancellation; Modulation coding; Multiaccess communication; Multipath channels; Physical layer; RAKE receivers; Tail;
Conference_Titel :
Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-7700-1
DOI :
10.1109/WCNC.2003.1200393
