Title :
Performance of single-user and multi-user constant-energy bit loading in Hiperlan channels
Author :
Garcia Armada, Ana ; Cioffi, John M.
Author_Institution :
Dept. of Signal Theor. & Commun., Carlos III Univ. of Madrid, Madrid, Spain
Abstract :
Several WLAN standards, such as Hiperlan-2, have chosen OFDM as a transmission technique due to its multipath performance. However, in these standards spectrum is not optimized. This paper analyzes the performance of single-user and multi-user constant-energy bit loading in Hiperlan channels. We show that bit rates may be increased up to 12 times in the single-user case and a gain of more than 100% may be achieved relative to Hiperlan-2 in multi-user scenarios.
Keywords :
OFDM modulation; multipath channels; multiuser detection; wireless LAN; wireless channels; HiperLAN-2 channels; OFDM; WLAN standards; multicarrier modulation techniques; multiuser constant-energy bit loading; single-user constant-energy bit loading; transmission technique; wireless local area networks; Abstracts; Modulation; Reliability; Signal to noise ratio;
Conference_Titel :
Signal Processing Conference, 2002 11th European
Conference_Location :
Toulouse
