What a difference a letter makes (Part 2)

摘要

Editor's note: To gain an understanding of the fundamental differences between the established 802. 11ac wireless communication standard and the new 802.11ax so as to perform testing on the bench and in the field, the author began the series last month with a general overview of the changes and, in particular, those at the PHY layer. In Part 2, we examine the new standard's dual modes of operation (MU-MIMO and OFDMA) and aspects of multi-user operation.