Title :
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
fDate :
31 May-2 June 2004
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;
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
DOI :
10.1109/CASSET.2004.1321921
