Title :
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
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;
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
DOI :
10.1109/RFM.2008.4897424
