Title :
Bit-loaded H-OFDM to increase capacity in WLAN/WPAN
Author :
Jimenez, V.P.G. ; Armada, Ana Garcia
Author_Institution :
Univ. Carlos III de Madrid, Leganes, Spain
Abstract :
In this paper bit-loading techniques have been applied to an H-OFDM system in an ad-hoc WLAN environment. The effect on the performance of the channel estimation errors has been analyzed showing that due to the proposed channel estimation procedure this effect is not very important. Also an upper-bound for the mean number of bits per OFDM symbol is derived. Those results show that the complexity introduced in order to manage the ad-hoc scenario and bit-loading techniques is worthwhile because of the good behaviour obtained.
Keywords :
OFDM modulation; ad hoc networks; channel estimation; error analysis; error statistics; personal area networks; wireless LAN; WLAN capacity; WPAN capacity; ad-hoc WLAN environment; ad-hoc scenario; bit-loaded H-OFDM; bit-loading techniques; channel estimation errors; complexity; mean number of bits per OFDM symbol; Airports; Bit rate; Channel estimation; Cost function; Gas insulated transmission lines; Modulation coding; OFDM; Transmitters; Wireless LAN; Wireless personal area networks;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1404689