Testing Very High Throughput (VHT) 802.11ac Signals
应用文章
Overview
Since the introduction of the first 802.11 Wireless Local Area Network (WLAN) standard, new usage models requiring ever higher data throughputs have emerged, in turn necessitating new 802.11 variants. The 802.11n standard, for example, came about as a way to support things like data sharing amongst connected devices in the home or small office and wireless printing.
Today, the increasing popularity of bandwidthintensive activities such as in-room gaming, high definition video streaming and content download to mobile devices, is creating demand for even better performance with greater speed.
The IEEE 802.11ac WLAN standard is specifically designed to meet these needs. As an extension of 802.11n, the Very High Throughput (VHT) 802.11ac standard specifies a minimum 500 Mbit/s single link and 1 Gbit/s overall throughput, running in the 5 GHz band. In contrast to the 20 MHz channel bandwidth of earlier standard variants, 802.11ac mandates an 80 MHz bandwidth, with optional wider bandwidths of 160 and 80+80 MHz