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In the past years numerous algorithms, schemes and techniques have been proposed, in order to improve the performance of the wireless multi-antenna communication systems. Real-time multi-antenna testbeds are offering the means to analyse the real-world performance, implementation cost and feasibility of such novel techniques, accounting for hardware limitations and software constraints. This paper...
When the transmission scenario includes a training sequence or pilots, semi-blind channel estimation techniques have shown a tendency to fully exploit the information available from the received signal if they are correctly implemented. This feature leads semi-blind channel estimation performance to exceed that of the schemes based on the blind part or the training sequence only. Moreover, in some...
Modulation detection, which is one of the major tasks of an intelligent receiver in a cognitive radio communication systems, is an intermediate step between signal detection and demodulation. In this paper, we present a time-frequency based method for the detection of modulation type in the presence of noise. The Discrete Evolutionary Transform is used to distinguish PSK and FSK signals. The performance...