Frequency Hopping Code Division Multiple Access for Wireless Local Access

In this paper, the suitability of Slow FrequencyHopping Code Division Multiple Access (SFHCDMA) isevaluated for wireless local access applications.Investigations of the wireless channel indicate that frequency hopping mitigates the poorpropagation characteristics associated with low mobilitycommon to fixed wireless applications. Employingstatistical analysis and simulation models, it is shownthat the frequency hopped channel displays inherentfrequency diversity. Consequently, an FH architecture isresilient to the effects of intersymbol interferencearising from significant time dispersion frequently experienced in the wireless channel.Furthermore, interference diversity of SFH-CDMA resultsin a robust air interface technique. With simulationtechniques it is demonstrated that SFH-CDMA can support the medium rate service bearers (approximately1 Mbps) required for wireless local access, whilstproviding high capacity.