DocumentCode :
1311444
Title :
Optimization and performance evaluation of multicarrier transmission
Author :
Willink, Tricia J. ; Wittke, Paul H.
Author_Institution :
Dept. of Commun., Communications Res. Center, Ottawa, Ont., Canada
Volume :
43
Issue :
2
fYear :
1997
fDate :
3/1/1997 12:00:00 AM
Firstpage :
426
Lastpage :
440
Abstract :
Optimization of the performance of multicarrier transmission over a linear dispersive channel is presented. The optimum data and power assignment to the subcarriers are derived for both the conventional error probability criterion, and a new criterion based on the normalized mean-square error. The assignments and algorithms hold for channels where performance is degraded by additive noise, intersymbol and interchannel interference. Lower bounds on throughput are derived and are used to compare multicarrier performance with conventional single-carrier quadrature amplitude modulation (QAM) with both linear and decision feedback equalization. It is seen that multicarrier transmission can provide a significant improvement at low and intermediate channel signal-to-noise ratios. As an example, the optimization is applied to the high-speed digital subscriber loop, and multicarrier transmission is demonstrated to be superior to decision feedback equalized single-carrier QAM
Keywords :
adjacent channel interference; decision feedback equalisers; error statistics; frequency division multiplexing; intersymbol interference; optimisation; probability; quadrature amplitude modulation; subscriber loops; telecommunication channels; OFDM; QAM; SNR; additive noise; decision feedback equalization; error probability; high-speed digital subscriber loop; interchannel interference; intersymbol interference; linear dispersive channel; linear equalization; lower bounds; multicarrier performance; multicarrier transmission; normalized mean-square error; optimization; optimum data assignment; optimum power assignment; orthogonal frequency division multiplexing; performance evaluation; signal-to-noise ratios; single carrier quadrature amplitude modulation; subcarriers; throughput; Additive noise; DSL; Decision feedback equalizers; Degradation; Dispersion; Error probability; Interchannel interference; Quadrature amplitude modulation; Signal to noise ratio; Throughput;
fLanguage :
English
Journal_Title :
Information Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9448
Type :
jour
DOI :
10.1109/18.556103
Filename :
556103
Link To Document :
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