A Link-Level Performance Analysis for Mediumband Wireless Communication

Mediumband wireless communication refers to wireless communication through a class of channels known as “mediumband” that exists on the <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$T_{m}T_{s}$</tex>-plane. In this paper, further strengthening “the case for mediumband” as a physical layer enabling technology for future wireless communication, the link-level performance limits of mediumband channels is analysed in terms of uncoded bit error rate (BER). The paper considers a MMSE detector with a varying degree of channel state information (CSI) along with CSI estimation. We show that, owing mainly to the effect of the deep fading avoidance, which is unique to the channels in the mediumband, mediumband wireless systems, if designed judiciously, have the potential to achieve significantly superior link-level performance, with reasonable CSI overhead, even in highly unfavourable nonline-of-sight (NLoS) propagation where the deep fading is dominant.