Suppression of ISI Caused by Sampling Time Offset in IFDMA Systems

Author

Arkhipov, Alexander ; Schnell, Michael

Author_Institution

German Aerosp. Center (DLR), Wessling

fYear

2007

fDate

1-5 July 2007

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISTMWC.2007.4299054

Filename

4299054