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Using space time block coding (STBC) to enhance the communication quality in underground environments may be of great interest. In this paper, by the aid of the simple maximum likelihood algorithm at the reception, the bit error rate performance of STBC scheme is investigated on a 2× 2 MIMO system within an underground gold mine environment. Taking Rayleigh channel as a reference, the performance...
In this work, we are interested in the evaluation of the capacity of the ultra wideband (UWB) channel in an underground mine. Using optimal power spectrum allocation (OPSA) at the transmitter side, we have computed this capacity by taking into account the fading characteristics of the channel. The results show the pertinence of the optimal power spectrum allocation for this type of channel. An improvement...
One way to combat channel fading and improve the wireless system performance is by using antenna diversity. Because of the presence of multiple multipath components, underground channels are prone to fading. In this paper, the performance enhancement provided by using a 1 2 space diversity system with the antennas designed at the LRCTS is investigated. The effect of the size of the demeaning window...
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