Optimal Design of Noisy Transmultiplexer Systems
1 Signal Processing Group, Institute of Physics, University of Oldenburg, Oldenburg 26111, Germany
2 School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
EURASIP Journal on Advances in Signal Processing 2006, 2006:064645 doi:10.1155/ASP/2006/64645Published: 14 March 2006
An optimal design method for noisy transmultiplexer systems is presented. For a transmultiplexer system with given transmitters and desired crosstalk attenuation, we address the problem of minimizing the reconstruction error while ensuring that the crosstalk of each band is below a prescribed level. By employing the mixed optimization, we will ensure that the system with suboptimal reconstruction error is more robust and less sensitive to the changes of input signals and channel noises. Due to the overlapping of adjacent subchannels, crosstalk between adjacent channels is expected. And the problem of crosstalk attenuation is formulated as an optimization problem, solved in terms of linear matrix inequalities (LMIs). The simulation examples demonstrate that the proposed design performs better than existing design methods.