Performance evaluation of OFDM schemes over multipath fading channels

Saeed, Mohd Abdo and Mohd Ali, Borhanuddin and Habaebi, Mohamed Hadi (2003) Performance evaluation of OFDM schemes over multipath fading channels. In: 9th IEEE Asia-Pacific Conference on Communications, APCC 2003, in conjunction with 6th Malaysia International Conference on Communications, MICC 2003, 21st-24th September 2003, Penang Malaysia.

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Abstract

This paper discusses the transmission of the Orthogonal Frequency Division Multiplexing (OFDM) signal through the multipath fading indoor channel and its capability to combat the Intersymbol interference (ISI) as well as its eflective implementation with the discrete Fourier transform is, described.. The channel model used was based on Saleh-Valeuzqeia model with loghormd fading distribution ,of 'gain 'amplitudes. Simnlation.modules were developed and the eflect of the multipath 'on the, OFDM system. performance with BPSK, QPSK, l6PSK, 64PSK 16QAM, 64QAM, and l28QAM modulations was evaluated in terms of the bit error rate @ER) as a function of the energy per hit-tonoise ratio (EBNR). The influence of the number of carriers as well as the guard interval duration on the performance.was.'also investigated. Simulations showed that the EBNR required to achieve a certain BER is significantly increased by 8-10 dB for dense multipath fading channels over that required in AWGN channels. These performance measures are useful for the design and assessment of high speed ' indoor wireless communication systems. Keywords-. OFDM technique, Multipath fading, Indoor channel modeling.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	6727/26373
Uncontrolled Keywords:	AWGN channels, Binary phase shift keying, Bit error rate, Discrete Fourier transforms, Fading, Intersymbol interference, OFDM modulation, Quadrature phase shift keying, System performance, Velocity measurement
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Dr. Mohamed Hadi Habaebi
Date Deposited:	13 Sep 2013 11:58
Last Modified:	12 Nov 2019 16:09
URI:	http://irep.iium.edu.my/id/eprint/26373

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