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A review of the physical principles behind the Wi-Fi /5G wireless revolution

A review of the physical principles behind the Wi-Fi /5G wireless revolution

Sep 18, 2018 |

Following on from a previous article on DSL and its scientific bases, I now want to review the fundamentals of another technology: radio. As with a DSL, the ability to transmit data in any radio communications system – from the very first Marconi experiments to 5G networks – is bound by Shannon’s equation, based on the channel’s bandwidth and signal-to-noise ratio. In radio, we also have another...

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WPA3: Improved Wi-Fi security

WPA3: Improved Wi-Fi security

Jun 26, 2018 |

The nature of electromagnetic waves is such that anyone in a wireless network can receive the data sent over the air. With high-gain antennas, it is possible to listen in on the data that passes through an office from outside the building. That is why, right from the outset, a great deal of importance has been attached to wireless network security. By 1999, the first version of the IEEE 802.11...

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WPA3, the new safety standard for safer Wi-Fi networks

WPA3, the new safety standard for safer Wi-Fi networks

May 2, 2018 |

Nowadays, all offices, hotels, parks, hospitals and above all private domiciles, have Wi-Fi connectivity for laptops, tablets and smartphones. Likewise, we must consider the new lines of intelligent domestic equipment, also connected and remotely managed via Wi-Fi. There is, however, a question we all ask ourselves: how safe are wireless networks? Should a hacker access our Wi-Fi, they could...

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Access to guest networks

Access to guest networks

Jul 25, 2017 |

Nowadays, all companies provide their customers with Wi-Fi in some form or another. We find it in shopping malls, airports, restaurants, offices and even on transport. It is fair to say that Wi-Fi has become a commodity. Most customers want to connect to Wi-Fi services in the simplest way possible. Therefore, their preferred methods of accessing them might be an open Wi-Fi network or a password...

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The near future of Wireless technology : Wi-Fi 802.11ax

The near future of Wireless technology : Wi-Fi 802.11ax

Mar 28, 2017 |

Each time we download an application, browse the Internet, read an email or watch something on YouTube on our smartphones, we’re using some type of wireless technology. For mobile networks this means 3G or 4G LTE. However, when it comes to our home or work environment, we’re probably using Wi-Fi. From 802.11a, endorsed in the 90s (reaching speeds of up to 54 Mbps over 5 GHz radio waves) to the...

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ALL IP by the short hairs – Part 2

ALL IP by the short hairs – Part 2

Jan 19, 2017 |

The following example will probably clarify the issue we had last week regarding the alternative approaches to ALL IP solution. A system which is automatically provisioned with basic functions such as Internet access, registering SIP/VoIP accounts, and a setup for basic telephony should also provide Wi-Fi for guests and business partners. Guests can use Wi-Fi by entering a preshared key. It is...

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