Title :
Monte-Carlo estimation of time mismatch effect in an OFDM EER architecture
Author :
Bercher, J.F. ; Diet, A. ; Berland, C. ; Baudoin, G. ; Villegas, M.
Author_Institution :
ESYCOM - ESIEE, Noisy-Le-Grand, France
Abstract :
New 5 GHz wireless local area networks standards use OFDM modulation in order to increase data rate transfer. An OFDM transmitter needs a linearization technique due to nonlinearities of the power amplification operation. The EER architecture can be used to solve this problem while keeping high efficiency. However several sources of imperfections lower the quality of the signal. Time mismatch has especially a great impact on EVM and spectral re-growths. This work presents a Monte Carlo study of envelope/phase delay influence on the OFDM signal. The autocorrelation is estimated considering the OFDM signal as complex Gaussian.
Keywords :
3G mobile communication; Gaussian distribution; Monte Carlo methods; OFDM modulation; correlation methods; data communication; linearisation techniques; radio transmitters; wireless LAN; 3G mobile communication; EVM; Monte-Carlo estimation; OFDM EER architecture; OFDM transmitter; autocorrelation; complex Gaussian signal; data rate transfer; linearization technique; modulation; spectral re-growths; time mismatch effect; wireless local area networks standards; Autocorrelation; Computational modeling; Delay; Gaussian processes; Monte Carlo methods; OFDM modulation; Radio frequency; Radio transmitters; Signal analysis; Signal processing;
Conference_Titel :
Radio and Wireless Conference, 2004 IEEE
Print_ISBN :
0-7803-8451-2
DOI :
10.1109/RAWCON.2004.1389130
