A time-frequency synchronization algorithm free of ISI for Hpi system

Author

Ma, Zhangyong ; Kim, Young-il

Author_Institution

Portable Internet system research team, Electron. & Telecommun. Res. Inst., Daejeon, South Korea

Volume

3

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

1758

Abstract

OFDM system performance is more sensitive to frequency offset and timing error than single-carrier systems. The paper presents a new algorithm which makes use of the autocorrelation characteristics of the pseudo sequence (PN-sequence) to improve the accuracy of the frequency offset and timing error based on the special pilot pattern. Intersymbol-interference (ISI) can be removed only if the correct parameters are chosen. The theoretical analysis and simulation results verify the robustness to multipath of this algorithm.

Keywords

OFDM modulation; correlation methods; intersymbol interference; multipath channels; synchronisation; timing; ISI; OFDM system; PN-sequence; autocorrelation characteristics; frequency offset; intersymbol-interference; multipath; pilot pattern; pseudo sequence; single-carrier systems; time-frequency synchronization algorithm; timing error; Algorithm design and analysis; Analytical models; Autocorrelation; Frequency synchronization; Intersymbol interference; OFDM; Robustness; System performance; Time frequency analysis; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1400337

Filename

1400337