In this paper, we study an opportunistic scheduling and adaptive modulation scheme for a wireless network with an XOR network coding scheme, which results in a cross-layer problem for MAC and physical layers. A similar problem was studied in [2] which considered an idealized system with the Shannon capacity. They showed that it may not be optimal for a relay node to encode all possible native p...

Constant-power adaptive transmission technique adopting UL-coded spectrally-precoded orthogonal frequencydivision multiplexing (SP-OFDM) signals with one tap zeroforcing equalization is studied on the flat fading channel. By jointly adapting the precoding order for spectral precoder and the component modulation for OFDM, constant-power ULcoded adaptive SP-OFDM is shown to outperform conventiona...

Adaptive transmission technique adopting rectangularlypulsed orthogonally multiplexed modulation (OMM) signals is studied for the flat Rayleigh fading channel. By choosing spectrally efficient OMM signals in accordance with channel status under an error rate constraint, constantpower adaptive OMM systems are shown to significantly outperform the conventional constant-power adaptive orthogonal f...