Parameter optimization for a symmetric multicarrier transmission scheme

Transmitter optimization for a multicarrier system with Gaussian pulse as transmit filter is studied in this paper. Symbol duration T and α are optimization parameters, where α is a parameter in Gaussian pulse function. 2-D minimum mean square error decision-feedback equalizer (MMSE-DFE) is used in the receiver and cost function is the output unbiased signal-to-noise ratio (SNR) of 2-D MMSE-DFE. Four kinds of deterministic channels are discussed. Analysis shows that the problem for time-selective channel is the dual problem for frequency-selective channel. If doubly-selective channel is deterministic separable, we obtain a general result, which is highly symmetric in time and frequency domains. Finally, we propose balanced design for practical purposes.