A new detection algorithm for OFDM system without cyclic prefix

Author

Wang, Chunguang ; Zhou, Zheng

Author_Institution

Coll. of Telecom Eng., Beijing Univ. of Posts & Telecommun., China

Volume

2

fYear

2004

fDate

31 May-2 June 2004

Firstpage

453

Abstract

In OFDM system, cyclic prefix (CP) is necessary to combat intersymbol interference (ISI) and intercarrier interference (ICI). Employing CP simplifies the channel equalization, but results in a considerable bandwidth loss. In this paper, a multicarrier detection algorithm is proposed for OFDM system without CP, which implements the successive detection by decision-feedback equalizer (DFE) based on minimum mean-square error (MMSE) criterion. Simulation results show that the proposed scheme has higher bandwidth efficiency and better performance in bit error rate (BER).

Keywords

OFDM modulation; channel estimation; decision feedback equalisers; error statistics; intersymbol interference; least mean squares methods; ICI; ISI; MMSE; OFDM system; bandwidth efficiency; bit error rate; channel equalization; decision-feedback equalizer; intercarrier interference; intersymbol interference; minimum mean-square error criterion; multicarrier detection algorithm; successive detection; AWGN; Additive white noise; Bandwidth; Bit error rate; Decision feedback equalizers; Detection algorithms; Fading; Intersymbol interference; OFDM; Signal detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on

Print_ISBN

0-7803-7938-1

Type

conf

DOI

10.1109/CASSET.2004.1321921

Filename

1321921