We now see an increasing number of self-tracking apps and wearable devices. Despite the vast number of available tools, however, it is still challenging for self-trackers to find apps that suit their ...
Abstract: In this letter, a flexible double-layer optical orthogonal frequency division multiplexing (OFDM) scheme is proposed for visible light communications (VLC). At the transmitter, the proposed ...
Abstract: The problems of narrow space for inspection operation, frequent equipment movements, harsh operating environment and complex position relationship in coal mine general mining working face ...
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