Title :
MC-CDMA in the uplink: a transmission scheme which tolerates frequency offsets and frequency selective channels
Author :
Zhang, Wei ; Lindner, Jiirgen
Author_Institution :
Dept. of Inf. Technol., Ulm Univ., Germany
Abstract :
We consider the uplink transmission of a coded MC-CDMA system in the presence of carrier frequency offsets. Based on a vector transmission model the impacts of these frequency offsets are analyzed and a downlink carrier frequency offset estimation and compensation scheme is proposed for use in the uplink. At the base station a linear minimum mean square error multiuser detector is employed to suppress the multiuser interference caused by the frequency estimation errors as well as by multipath propagation.
Keywords :
code division multiple access; frequency estimation; interference suppression; least mean squares methods; mobile radio; multipath channels; multiuser detection; base station; coded MC-CDMA system; compensation; downlink carrier frequency offset estimation; frequency selective channels; linear minimum mean square error; multi-carrier code division multiple access; multipath propagation; multiuser detector; multiuser interference suppression; uplink transmission; vector transmission model; Base stations; Detectors; Downlink; Frequency domain analysis; Frequency estimation; Interference; Mean square error methods; Multiaccess communication; Multicarrier code division multiple access; OFDM;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1370956
