Title :
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
fDate :
9/1/1999 12:00:00 AM
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;
Journal_Title :
Vehicular Technology, IEEE Transactions on
