Mobility

Design of Multiuser CDMA Systems in Fading Channels

Free registration required

Executive Summary

In this paper, the authors examine the effect of channel estimation errors on the performance of Multiple-Input - Multiple-Output (MIMO) systems that employ Code-Division Multiple-Access (CDMA) transmission. Channel estimation based on training techniques has widely been considered throughout the literature. However, employing these training techniques in MIMO-CDMA systems degrades system performance due to multiuser interference. This degradation is clear as the diversity advantage of the MIMO system diminishes with the increased level of interference. As a remedy to this problem, they propose a channel-estimation and data-detection scheme based on the superimposed training technique for space-time spreading systems.

  • Format: PDF
  • Size: 1132.7 KB