Performance of downlink multicarrier CDMA with space diversity Academic Article uri icon

abstract

  • We apply a simple transmit diversity technique to down-link multicarrier CDMA (MC-CDMA) systems. The resulting diversity on each subcarrier improves orthogonality among users, which is distorted by the subcarriers' multipath fading. Accordingly, the diversity suppresses multiuser interference. For equal-gain-combining (EGC) receivers, both theoretical analysis and simulation results show that interference is approximately reduced by half compared to MC-CDMA without space diversity. For the orthogonality-restoring combining (ORC) receiver, simulation results show that it suppresses noise amplification while rejecting multiuser interference.

author list (cited authors)

  • Li, Y., Georghiades, C. N., Huang, G., IEEE, .., & IEEE, ..

publication date

  • December 2000

publisher