IMPACT OF RADIO LINK PARAMETERS ON THE CAPACITY OF UHF AND MILLIMETER-WAVE INDOOR CELLULAR-SYSTEMS

Third-generation mobile and portable radio systems will require higher transmission rates than recent second-generation systems in order to provide users with access to multimedia services, The typical bandwidt hs of second-generation systems are generally such that, for indoor ap plications, multipath diversity can be exploited by code division mult iple access (CDMA) schemes, but not by frequency division-time divisio n multiple access (FD-TDMA) schemes, However, for the larger bandwidth s of future third-generation systems, multipath diversity can also be exploited by means of FD-TDMA, This paper investigates the influence o f such an increase in transmission rate and various other radio link p arameters on the capacity of an indoor wireless FD-TDMA cellular syste m, System performance is assessed via an analytically rigorous and sta tistically relevant semi-analytical approach: using radio link perform ance results obtained as a function of small-scale signal variations a nd without any assumptions with respect to the distribution of interfe rence, the overall average system outage rate and binary error rate ar e evaluated by considering large-scale signal variations over a hexago nal cellular layout, Results are expressed in terms of the relative va riations of the required handoff threshold, path loss and shadowing ch aracteristics, for different combinations of cellular reuse factor, tr ansmission rate and number of diversity antennas at the receiver, both in the presence and absence of equalization.