In this paper, we investigate the relation between the quadrature amplitude modulation (QAM) input information rates (IRs) of multi-carrier (MC) and single carrier (SC) systems transmitted over inter-symbol interference (ISI) channels with additive white Gaussian noise (AWGN). In particular, considering uniform power spectrum transmission, we conjecture that, for a given channel impulse response, the IR corresponding to an SC input distribution is higher than that corresponding to an MC input distribution. We give an intuitive justification of our conjecture and confirm it, by means of numerical results, considering two sets of randomly generated channels.
On information theoretic aspects of single- and multi-carrier communications / M., Franceschini; R., Pighi; Ferrari, Gianluigi; Raheli, Riccardo. - (2008), pp. 94-99. (Intervento presentato al convegno Information Theory & Apllications Workshop (ITA 2008) tenutosi a SAN DIEGO, CALIFORNIA nel 27 gennaio - 2 febbraio 2008) [10.1109/ITA.2008.4601030].
On information theoretic aspects of single- and multi-carrier communications
FERRARI, Gianluigi;RAHELI, Riccardo
2008-01-01
Abstract
In this paper, we investigate the relation between the quadrature amplitude modulation (QAM) input information rates (IRs) of multi-carrier (MC) and single carrier (SC) systems transmitted over inter-symbol interference (ISI) channels with additive white Gaussian noise (AWGN). In particular, considering uniform power spectrum transmission, we conjecture that, for a given channel impulse response, the IR corresponding to an SC input distribution is higher than that corresponding to an MC input distribution. We give an intuitive justification of our conjecture and confirm it, by means of numerical results, considering two sets of randomly generated channels.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
