Title :
Bounds on the interchannel interference of OFDM in time-varying impairments
Author :
Li, Ye ; Cimini, Leonard J., Jr.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
3/1/2001 12:00:00 AM
Abstract :
In this article, tight and universal bounds have been derived for the interchannel interference (ICI) of an orthogonal frequency-division multiplexing (OFDM) signal resulting from Doppler spread. The universal bound depends only on the product of the maximum Doppler frequency and the OFDM symbol duration. The tight bound also depends on the variance of the Doppler spectrum. Compared with the exact ICI expressions derived by other researchers, these bounds are easier to evaluate and can provide useful insight
Keywords :
Doppler effect; OFDM modulation; adjacent channel interference; time-varying channels; Doppler spectrum variance; Doppler spread; OFDM signal; OFDM symbol duration; exact ICI expressions; interchannel interference; maximum Doppler frequency; mobile wireless channel; orthogonal frequency-division multiplexing; tight bound; time-varying channels; time-varying impairments; universal bound; Additive noise; Bandwidth; Degradation; Fading; Frequency division multiplexing; Interchannel interference; Intersymbol interference; OFDM; Stochastic processes; Time-varying channels;
Journal_Title :
Communications, IEEE Transactions on
