Title :
Frequency domain equalization for the multicarrier spread spectrum system in multipath fading channel
Author :
Xing, Hongnian ; Jarske, Petri
Author_Institution :
Digital Media Inst., Tampere Univ. of Technol., Finland
Abstract :
The combination of orthogonal frequency division multiplexing (OFDM) with direct sequence spread spectrum (DS/SS) is suitable for the design of a multiuser system robust against channel impairments. We propose a frequency domain equalization method for the OFDM-DS/SS system in mobile fading channels. It is shown that the learning constant is a key factor which is chosen depending on the channel conditions. By using the adaptive teaching constant, the average performance of the equalizer can be improved
Keywords :
equalisers; fading; frequency division multiplexing; frequency-domain analysis; land mobile radio; multi-access systems; multipath channels; pseudonoise codes; spread spectrum communication; OFDM; OFDM-DS/SS system; adaptive teaching constant; average performance; channel conditions; channel impairments; direct sequence spread spectrum; frequency domain equalization; learning constant; mobile fading channels; multicarrier spread spectrum system; multipath fading channel; multiuser system; orthogonal frequency division multiplexing; Attenuation; Education; Equalizers; Fading; Frequency domain analysis; Multipath channels; OFDM; Robustness; Spread spectrum communication; Transmitters;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.545257
