In many single and multi-user MIMO systems, different sorts of symbol mapping are employed. This is of course based on the modulation schemes and/or the pseudo-correlation of the signals. These can be for instance circularly symmetric or non-circular signals which are transmitted. Conventional linear transceiver processing is optimal for circularly symmetric signals but sub-optimal for non-circ...

one of the common problems in reflective seismic records is the existence of coherent linear and random noises which cause covering of the most important parts of reflective signals; therefore, it is necessary to attenuate them by processing methods. several processing techniques have been devised for attenuation of coherent linear noises and linear radon or ?-? transform is a powerful techniqu...

| This paper is concerned with the problem of recovering multiple source signals that are transmitted through a linear Multiple Input Multiple Output (MIMO) system, without resorting to any prior knowledge. Source signals are assumed to be spatially independent and temporally i.i.d. non-Gaussian sequences. We present an un-supervised hybrid network (a linear feedback network with FIR synapses f...

brain-computer interfaces (bci) record brain signals, analyze and translate them into control commands which are relayed to output devices that carry out desired actions. these systems do not use normal neuromuscular output pathways. actually, the principal goal of bci systems is to provide better life style for physically-challenged people which are suffered from cerebral palsy, amyotrophic la...