Sensitivity of interfering power estimation to combining strategies in MC-CDMA systems
Thierry Lestable, A. Wautier, Jacques Antoine, Jérôme Brouet, L. Husson, Vinod Kumar, J.-C. Dany · 2003
In this paper, the problem of accuracy in noise/interfering power estimate for an MC-CDMA receiver is considered. This quality parameter is a key feature in the link control for next generation wireless systems. It is used for bit loading, power control, dynamic frequency selection, or even handover. Adaptation of physical layer can also be based on this quality estimate. Therefore, its accuracy is of paramount importance when designing such adaptive systems. The sensitivity of the noise/interfering power estimate are compared and discussed for different diversity combining schemes viz: maximal ratio combining (MRC), equal gain combining (EGC), and selective combining (SC).