Title :
Improving mobility in wireless MAN
Author :
Lozhkin, Alexander N.
Author_Institution :
Fujitsu LTD., Yokosuka
Abstract :
Influence of Doppler shift and ICI are the focus of the paper. Newly proposed systems must provide a high mobility level compare with 802.11 standard and support low subcarrier frequency spacing. Moreover, for the higher carrier frequencies and mobile speeds, the influence for Doppler shifts will be large and therefore, the influence of ICI becomes severer. BER performances in such multipath and multiple Doppler shift environment obtained with decision feedback equalizer (DFE) and a newly proposed turbo equalizer (TE) estimated with the aid of computer simulation. The proposed TE provides better ICI suppression than does the DFE at the same level of complexity
Keywords :
Doppler shift; WiMax; decision feedback equalisers; error statistics; mobile radio; BER; Doppler shift; ICI; decision feedback equalizer; turbo equalizer; wireless MAN; Bit error rate; Computer simulation; Decision feedback equalizers; Doppler shift; Frequency estimation; Land mobile radio; OFDM modulation; Tellurium; WiMAX; Wireless LAN;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651714
