Title :
Comparison between different adaptive pre-equalization approaches for wireless LAN
Author :
Coersmeier, Edmuud ; Zielinski, Ernst
Author_Institution :
Meesmannstrasse 103, Bochum, Germany
Abstract :
The IEEE 802.11a wireless LAN standard defines a high system performance and therefore requires a certain signal accuracy for the OFDM transmitter output. Taking the potential analog low pass, medium IF and RF filter imperfections into account, it is necessary to pre-equalize the signal stream digitally before transmitting. The paper concentrates on the description and comparison between different mathematical approaches for pre-equalization in an OFDM transmitter front-end architecture. For the favorite algorithm, the corresponding simulation results are presented.
Keywords :
OFDM modulation; adaptive equalisers; low-pass filters; radio transmitters; radiofrequency filters; wireless LAN; IEEE 802.11a; OFDM transmitter; RF filter; adaptive equalization; low pass filter; medium IF filter; pre-equalization; wireless LAN; Approximation algorithms; Digital filters; Equations; Inverse problems; Least squares approximation; OFDM; System identification; System performance; Transmitters; Wireless LAN;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1045205
