Title :
Asynchronous spread spectrum multi-carrier multiple access systems with pilot symbol aided channel estimation
Author :
Kaiser, Stefan ; Krzymien, Witold A.
Author_Institution :
Inst. for Commun. Technol., German Aerosp. Center, Oberpfaffenhofen, Germany
Abstract :
Asynchronism between the users in multiple access systems like spread spectrum multi-carrier multiple access (SS-MC-MA) or multi-carrier CDMA causes intersymbol interference (ISI) and inter-subchannel interference (ICI) due to the loss of orthogonality. In this paper we investigate the effects of ISI and ICI on the performance of the asynchronous SS-MC-MA system uplink with pilot symbol-aided channel estimation. Moreover, we consider the suitability of power boosting of the pilot symbols to improve the link performance
Keywords :
ICI; code division multiple access; estimation theory; intersymbol interference; mobile radio; power control; radio links; spread spectrum communication; ICI; ISI; SS-MC-MA; asynchronous multiple access systems; inter-subchannel interference; intersymbol interference; mobile radio; multi-carrier CDMA; performance; pilot symbol-aided channel estimation; power boosting; spread-spectrum multi-carrier multiple access; system uplink; Boosting; Channel estimation; Digital video broadcasting; Error correction; Finite impulse response filter; Intersymbol interference; OFDM modulation; Radio transmitters; Spread spectrum communication; Wiener filter;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.800277
