Title :
Optimum performance of link adaptation in HIPERLAN/2 networks
Author :
Simoens, Sébastien ; Bartolomé, Diego
Author_Institution :
Motorola Labs Paris, Gif-sur-Yvette, France
Abstract :
In this paper link adaptation is investigated in the HIPERLAN/2 context. It is shown that updating the modulation and coding on a frame basis can bring a gain theoretically greater than 2.5 dB over the 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, the throughput loss resulting from PER estimation errors is illustrated by simulations and a sub-optimum method better suited to implementation is presented
Keywords :
encoding; fading channels; filtering theory; modulation; optimisation; radio links; radiofrequency filters; radiofrequency interference; wireless LAN; HIPERLAN/2 networks; PER estimation errors; SNIR; coding; interference; link adaptation; modulation; network simulations; optimum long term approach; optimum performance; propagation environments; receive filter selectivity; small-scale fading properties; sub-optimum method; throughput loss; throughput performance; transmit filter selectivity; transmit power; Analytical models; Computational modeling; Computer networks; Estimation error; Fading; Filters; Interference; Modulation coding; Performance analysis; Throughput;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944556
