document.write("« Multi-User Frequency-Selective Hybrid MIMO Demonstrated Using 60 GHz RF Modules. (arXiv:1711.02968v2 [cs.IT] UPDATED)");document.write(" | ");document.write("Multi-cell Device-to-Device Communications: A Spectrum Sharing and Densification Study. (arXiv:1711.03498v1 [cs.IT]) »");