Transmit optimization for time-invariant wireless channels utilizing a discrete multitone approach

This paper presents the improvement obtained from using a discrete multitone approach for transmitting information over a time-invariant wireless channel. A scalar channel model similar to the well known Jakes model (1974) is assumed. Additive white Gaussian noise is also assumed. Flat energy is put across the entire band and the multitone signal-to-noise ratio and bit rate are computed. These values are compared with those obtained from using a discrete multitone approach and assigning bits only to the “good” portions of the band. Improvements in signal-to-noise ratio and in data rates are obtained using this method. Analytic expressions for the SNR and data rate improvements are also derived