Microwave Mobile Communications
Microwave Mobile Communications
Elementary Functions: Algorithms and Implementation
Elementary Functions: Algorithms and Implementation
A single FPGA filter-based multipath fading emulator
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A novel emulator for discrete-time MIMO triply selective fading channels
IEEE Transactions on Circuits and Systems Part I: Regular Papers - Special section on 2009 IEEE custom integrated circuits conference
Arbitrary Distribution Random Variable Generator for Channel Emulators
RECONFIG '11 Proceedings of the 2011 International Conference on Reconfigurable Computing and FPGAs
Mobile Radio Channels
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The rapid technological development in the field of wireless communications calls for devices capable of reproducing and simulating the behavior of the channel under realistic propagation conditions. This paper presents a hardware fading channel simulator that is able to generate stochastic processes characterized by symmetrical and asymmetrical Doppler power spectral densities (PSDs) depending on the assumption of isotropic or non-isotropic scattering. The concept of the proposed hardware simulator is based on an implementation of the sum-of-cisoids (SOC) method. The hardware simulator is capable of handling any configuration of the cisoid's amplitudes, frequencies, and phases. Each of the cisoids that constitutes the SOC model is implemented using a piecewise polynomial approximation technique. The investigation of the higher-order statistics of the generated fading processes, like the level-crossing rate (LCR) and the average duration of fades (ADF), shows that our design is able to reproduce accurately the key features of realistic channel models that are considered as candidates for the latest wireless communication standards.