The 802.11n standard provides for the use of MIMO (Multiple Input Multiple Output) technology, on the basis of which can be implemented one of the following options:

Various environmental factors can degrade WiFi performance. The factors that affect WiFi signal attenuation include absorption, reflection, diffraction and multipath:

In real life no one standard has been able to maximize its theoretical performance since many factors influence the signal: electromagnetic interference from household appliances and electronics, obstacles in the signal path, signal reflections, and even magnetic storms.

The recent studies carried out by a number of manufacturers of Wi-Fi devices have identified the support for 5 GHz networks as a competitive advantage. But why are such networks better than 2.4 GHz ones, in which many modern routers operate? Let's look into the matter.

Unlike 2.4GHz bands, there are no overlapping channels in 5GHz range, like it was with 1, 2 and 3 channels. For example, within the context of U-NII-1 (see a list of WLAN channels below) only channels 36, 40, 44 and 48 can be selected; by default, each of them occupies 20MHz and nominally does not interfere with neighboring channels.

How do devices share channel resources?
The first suggestion that WiFi devices share channel resources equally has not been confirmed by experiments (fig. 1).

Often, building an authentication system requires some sort of deployment of IoT devices. At worst, every user needs a RFID device (similar to a key) to authenticate themselves. The idea proposed in this paper (Shi et al.) is to use present Wi-Fi infrastructure, which is very widely available (e.g. your local library has it, even the local candle shop likely has Wi-Fi).

How do WiFi channels affect each other? And what can we do about it?
An interesting approach to this problem was published in this article.

The Auto-channel means that a Wi-Fi router selects channels automatically based on the vendor’s algorithms. In this case, only a single device is considered and this can increase interference for the whole system.

Imagine what the head of a customer-facing or service-quality-driven business function might be able to do if they had access to a detailed picture of every individual customer’s service quality experience…

Imagine what the head of a customer-facing or service-quality-driven business function might be able to do if…

Read about how AX69 brings advanced WiFi insights in your DOCSIS network.

Immediate payoff from automation investments is essential, and tools such as AXTRACT and AXWIFI provide substantial benefits to existing customer service and service quality operations, in addition to laying the foundation for full automation.

Network experts forecast that global Wi-Fi traffic will steadily grow in the long run and it will soon exceed the …