Title :
Performance analysis of the OFDM system with one tap equalizer against the two-ray multipath channel
Author :
Kang, Hongku ; Hwang, Wooncheol ; Kim, Kiseon
Author_Institution :
Dept. of Inf. & Commun., K-JIST, Kwangju, South Korea
Abstract :
Orthogonal frequency division multiplexing (OFDM) is a suitable transmission scheme for high-speed transmissions in a multipath environment. It is well known that a guard interval (GI) reduces the inter-symbol interference (ISI) and inter-channel interference (ICI) and improves the BER performance. In the OFDM system with a GI, the one-tap equalizer compensates the channel effect successfully and improves the BER performance significantly. We analyze the BER performance of OFDM with a one tap equalizer against the two-ray multipath environment, and show some numerical results. The simple one tap equalizer gives a 7 dB gain in Eb/No comparing with the no equalizer case when the mean of the second-ray attenuation coefficient is 0.2
Keywords :
OFDM modulation; adjacent channel interference; equalisers; error statistics; interference suppression; intersymbol interference; multipath channels; quadrature phase shift keying; signal detection; 7 dB; BER performance; OFDM; OFDM system; attenuation coefficient; coherent QPSK detection; guard interval; high-speed transmission; interchannel interference; interference reduction; intersymbol interference; multipath environment; one tap equalizer; orthogonal frequency division multiplexing; performance analysis; signal representation; simulation results; two-ray multipath channel; Bit error rate; Equalizers; Fading; Frequency domain analysis; Interchannel interference; Intersymbol interference; Multipath channels; OFDM; Performance analysis; Signal representations;
Conference_Titel :
TENCON 99. Proceedings of the IEEE Region 10 Conference
Conference_Location :
Cheju Island
Print_ISBN :
0-7803-5739-6
DOI :
10.1109/TENCON.1999.818345
