Enhanced array-receiver operation with turbo codes for increasing the capacity of wideband CDMA networks

STAR, the spatio-temporal avay-receiver: was recently shown to outpe$orm RAKE-type array-receivers and to increase the capaciw of wideband CDMA networkr. Turbo codecs were also ident$ed as offering sign$cunt performance impmvements. In this contribution we demonstrote the gain ochieved by turbo codas over conventional convolutional codecs in a STAR-based CDMA system. For high data-rates of IS3.6Kbps with low mobiliry, link-levelsimulations on the uplink indicate that hub0 codecs gain 2 to 3 dB in required Sh'R at a BER < System-levelsimulations conf;nn that Sh'R gains almost double capacity. from 7 to I3 mobiles/cell for blindSTAR @e., withoutpilot) and fmm 10 to 22 mobiledcell forpilot-aided STAR.