Timing errors analysis of OFDM systems based on joint Cyclic-prefix and postfix

Author

Seirafian, Amir ; Vakily, Vahid Tabataba

Author_Institution

Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran

fYear

2007

fDate

7-7 Sept. 2007

Firstpage

81

Lastpage

86

Abstract

OFDM systems are sensitive to timing synchronization errors that refers to incorrect detection of the start position of an OFDM symbol. In this paper, first by considering cyclic-prefix (CPre) as a guard interval, formulas for various types of signal-to-interference (SIR) ratio in terms of timing errors are presented. Further we utilize CPre and Cyclic-postfix (CPost) jointly as a guard interval, and draw new SIR formulas. The simulations are performed in three different channels for DAB systems. As a result without any loss in bandwidth efficiency, the performance of DAB systems (based on joint CPre and CPost) would be more increased.

Keywords

OFDM modulation; error analysis; synchronisation; DAB system; OFDM symbol; cyclic prefix; digital audio broadcasting; orthogonal frequency division multiplexing; signal to interference ratio; timing error analysis; timing synchronization error; IP networks; Interference; Joints; OFDM; Simulation; Synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Algorithms, Architectures, Arrangements and Applications, 2007

Conference_Location

Poznan

Print_ISBN

978-1-4244-1514-4

Electronic_ISBN

978-1-4244-1515-1

Type

conf

DOI

10.1109/SPA.2007.5903304

Filename

5903304