Hierarchical Decode & Forward strategy in IR-UWB communication systems

This paper investigates multinode networks based on a Ultra Wideband (UWB) technology. The presence of several simultaneously communicating nodes in the network is not handled by “classical” - orthogonal separation - methods but is based on a novel approach based on information theory. Relay nodes inside the network utilize Hierarchical Decode & Forward (HDF) strategy which is promising to substantially increase the overall throughput of the network. We develop a coding scheme which is aware of the surrounding network structure hence multiuser interferences can be handled in codebooks design procedure. Performance of the proposed coding schemes is verified on the simplest multinode network topologies. A channel capacity was chosen as the performance metric. The capacity is numerically evaluated for real UWB propagation behavior simulated by appropriate channel models.