In this paper, link adaptation is investigated in the HIPER-LAN/2 context. It is shown that updating modulation and coding on a frame basis can bring a gain theoretically greater than 2.5 dB over optimum long term approach. The influence of the small-scale fading properties in the various propagation environments and of the transmit and receive filters selectivity is studied. The throughput performance is computed both analytically and by network simulations, assuming constant interference and constant transmit power as well as perfect knowledge of the SNIR or PER. Finally, throughput loss resulting from PER estimation errors is illustrated by simulations and sub-optimum method better suited to implementation is presented.
展开▼
