Performance analysis of a coded OFDM system in time-varying multipath Rayleigh fading channels

Author

Kim, Yun Hee ; Song, Iickho ; Kim, Hong Gil ; Chang, Taejoo ; Kim, Hyung Myung

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

48

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

1610

Lastpage

1615

Abstract

We analyze the combined influence of the interchannel and intersymbol interferences, which result from the time variation and delay spread of mobile channels, on the performance of an orthogonal frequency-division multiplexing (OFDM) system. Both analysis and simulation results are presented for uncoded 16-QAM. We also investigate the performance of a Reed-Solomon (RS) coded 16-QAM OFDM system when the number of subcarriers varies: it is observed that there is an optimum number of subcarriers that minimizes the post decoding symbol error probability of the RS code for each channel state

Keywords

OFDM modulation; Rayleigh channels; Reed-Solomon codes; adjacent channel interference; decoding; delays; error statistics; intersymbol interference; land mobile radio; modulation coding; multipath channels; quadrature amplitude modulation; time-varying channels; RS code; Reed-Solomon coded 16-QAM OFDM system; channel state; delay spread; interchannel interference; intersymbol interference; mobile channels; orthogonal frequency-division multiplexing; performance; performance analysis; post decoding symbol error probability; simulation results; subcarriers; time variation; time-varying multipath Rayleigh fading channels; uncoded 16-QAM; Analytical models; Decoding; Delay effects; Frequency division multiplexing; Interchannel interference; Intersymbol interference; OFDM; Performance analysis; Reed-Solomon codes; Time varying systems;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.790538

Filename

790538