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In this work, an evaluation of the fourth generation (4G) waveform performance in underground tunnel scenarios has been carried out with the help of hardware testbeds. The equipment for the measurements has been deployed inside the carriage of an underground train, and the antenna elements were located both outside and inside the carriage. The experiments consisted of narrowband and wideband propagation...
Quasi-orthogonal space-time block codes with orthogonal frequency division multiplexing (QO-STBC-OFDM) can exploit multipath diversity and achieve spectrally efficient communications. However, future wireless communication systems must be robust against both unintentional and intentional interference. As a result, there is a need for proper analytical tools to assess the performance of QO-STBC-OFDM...
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