Title :
On optimizing multicarrier transmission
Author :
Willink, T.J. ; Wittke, P.H.
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
Optimum conditions for maximizing the throughput of an orthogonal frequency division multiplexed (OFDM) system are derived, and an algorithm for achieving them is presented. Theoretical bounds on performance are derived and used to compare OFDM with conventional equalized single carrier QAM for both the conventional error probability criterion and a criterion based on the mean-squared error. OFDM is shown to achieve greater throughput than equalized single carrier QAM, especially at low to intermediate signal-to-noise ratios and on channels with poor spectral properties. As an example, the near end crosstalk-dominated high-speed digital subscriber loop is considered
Keywords :
crosstalk; error statistics; frequency division multiplexing; optimisation; probability; subscriber loops; telecommunication channels; OFDM system; SNR; algorithm; channels; equalized single carrier QAM; error probability; high-speed digital subscriber loop; mean squared error; multicarrier transmission; near end crosstalk; optimum conditions; orthogonal frequency division multiplexing; signal-to-noise ratio; spectral properties; theoretical performance bounds; throughput; Bandwidth; Decision feedback equalizers; Error probability; Fading; Frequency conversion; Intersymbol interference; OFDM modulation; Quadrature amplitude modulation; Signal to noise ratio; Throughput;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.550384
