Paper Info
Title
Capacity Of Ofdm Systems In Nakagami-M Fading Channels: The Role Of Channel Frequency Selectivity
Abstract
In this paper, we analyze the capacity of orthogonal frequency division multiplexing (OFDM) systems with carrier frequency offset (CFO) in frequency-selective Nakagami-m fading channels. Previous work on this topic has not taken into account the frequency selectivity of the channel. In this work, we have explicitly attributed the effect of channel frequency selectivity, i.e. frequency domain correlations, in evaluating the OFDM system performance in the presence of CFO. A closed-form expression is derived of the probability density function (PDF) of the signal-to-interference-and-noise ratio (SINR) in terms of CFO and channel correlation vector. Capacity is evaluated using numerical integration. The frequency-flat fading scenario and the perfectly frequency-selective fading (uncorrelated subcarriers) scenario form the two extremes, i.e. bounds, of the achievable OFDM capacity in the presence of CFO in Nakagami-m fading channels.
Year
DOI
Venue
2008
10.1109/PIMRC.2008.4699716
2008 IEEE 19TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS
Keywords
Field
DocType
fading channel,fading,interference,frequency offset,bit error rate,correlation,ofdm,spectral efficiency,probability density function,oscillations,lower bound,signal to noise ratio,field flow fractionation,ofdm modulation,system performance,frequency domain,correlation function,spectrum,numerical integration
Frequency domain,Topology,Telecommunications,Fading,Computer science,Signal-to-noise ratio,Carrier frequency offset,Communication channel,Real-time computing,Nakagami distribution,Fading distribution,Orthogonal frequency-division multiplexing
Conference
Citations 
PageRank 
References 
1
0.35
5
Authors
3
Name
Order
Citations
PageRank
Chandranath R. N. Athaudage1837.99
Masato Saito2324.02
Jamie Evans3959.49