In contrast to LOS scenarios, non-directed
LOS or diffuse configurations call for adaptive
transmission schemes due to their specific channel
properties, for instance, the common appearanceof spectral notches [11]. The idea of dynamic data
rate adaptive OFDM was proposed and developed
almost at the same time by another research group
and by us independently in [7, 8]. We have continued
working on implementation of such sophisticated
adaptive systems and have shown that data
rates up to the gigabit per second range, based on
DMT modulation with bit and power loading for
throughput maximization beyond conventional 3
dB bandwidth limitations, are feasible.