Title :
Suppression of ISI Caused by Sampling Time Offset in IFDMA Systems
Author :
Arkhipov, Alexander ; Schnell, Michael
Author_Institution :
German Aerosp. Center (DLR), Wessling
Abstract :
In this article, we investigate the influence of sampling time offset on the bit error rate (BER) performance in interleaved frequency-division multiple-access (IFDMA) uplink systems. It is shown that even small sampling time offset results in inter-symbol interference (ISI) and in signal-to-noise ratio (SNR) degradation. To avoid this, a soft ISI suppression algorithm is proposed which allows to significantly improve the system performance. The proposed algorithm can be applied to both IFDMA uplink systems and to conventional orthogonal frequency-division multiple-access (OFDMA) uplink systems.
Keywords :
error statistics; frequency division multiple access; interference suppression; intersymbol interference; BER performance; IFDMA systems; ISI suppression algorithm; OFDMA uplink systems; bit error rate; interleaved frequency-division multiple-access uplink systems; intersymbol interference; orthogonal frequency-division multiple-access; sampling time offset; signal-to-noise ratio degradation; Bit error rate; Degradation; Discrete Fourier transforms; Frequency estimation; Intersymbol interference; Navigation; Peak to average power ratio; Sampling methods; System performance; Transmitters;
Conference_Titel :
Mobile and Wireless Communications Summit, 2007. 16th IST
Conference_Location :
Budapest
Print_ISBN :
963-8111-66-6
Electronic_ISBN :
963-8111-66-6
DOI :
10.1109/ISTMWC.2007.4299054
