Performance of OFDM-FFT system in various wireless channels

Author

Taha, Haitham J. ; Salleh, M.F.M.

Author_Institution

Sch. Electr. & Electron. Eng., Univ. Sains Malaysia, Nibong Tebal

fYear

2008

fDate

2-4 Dec. 2008

Firstpage

500

Lastpage

504

Abstract

The increased in demand for high data rate in wireless communication systems paves the way for the development of broadband communication systems. A radio channel is plagued by multipath propagation, which causes frequency-selective fading in broadband signals. Orthogonal frequency-division multiplexing (OFDM) is a modulation scheme specifically designed to have high-speed data transmission as well as more robust over the frequency-selective fading channels. In this paper we discuss the impact of the number of qudarature amplitude modulation(QAM) modulation point over AWGN, flat fading as well as frequency selective fading channels.

Keywords

AWGN; OFDM modulation; fading channels; fast Fourier transforms; quadrature amplitude modulation; AWGN; OFDM-FFT system; broadband signals; frequency selective fading channels; multipath propagation; orthogonal frequency-division multiplexing; qudarature amplitude modulation; radio channel; wireless channels; wireless communication systems; AWGN; Amplitude modulation; Broadband communication; Data communication; Frequency division multiplexing; Frequency-selective fading channels; OFDM modulation; RF signals; Robustness; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference, 2008. RFM 2008. IEEE International

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-2866-3

Electronic_ISBN

978-1-4244-2867-0

Type

conf

DOI

10.1109/RFM.2008.4897424

Filename

4897424