Gigabit Wireless – the 802.11ac, the new 5th generation of WiFi, promised a gigabit wireless speed. Unfortunately, this is only theoretical maximum speed, which cannot be achieved in a real world environment.
Gigabit Wireless Speeds – The Truth or Legend
More about the 802.11ac you can read in the article 802.11ac – The Advantages and Disadvantages of The 5th WiFi Generation.
The rapid development of the wireless industry is bringing a new technology which enables the wireless speeds up to 7 Gbps. Yes, I didn’t misspell this – 7 Gbps and this is not all, the speed could go even to 25 Gbps. At the begging of 2015, the products will be already in the market – mobile phones working on 5 Gbps.
WiGig (not WiFi) Technology and 802.11ad
The gigabit wireless technology is taking a new path. The technology is no longer called WiFi, its name is WiGig. The Wi-Fi Alliance has opened its new branch called a Wireless Gigabit Alliance or short WiGig. The WiGig was founded to promote the 802.11ad standard, wireless standard that enables ultra fast wireless multi-gigabit speeds.
This new gigabit wireless technology is working on a much higher frequency. Higher frequency enables the higher bandwidth and faster wireless speeds. “The old” WiFi technology is working on 2.4 GHz and 5 GHz, while the newest WiFi standard – 802.11ac is working only on 5 GHz.
WiGig uses the frequency of 60 GHz. The problem with the much higher frequency comparing to the WiFi, is that it has lower range. The biggest problem is not the range, but the fact that this wireless signal cannot penetrate walls, ceilings and floors.
Let’s go together through the interesting features of this new gigabit wireless technology. Find out why 802.11ad is so fast and what other benefits of the 802.11ad standard.
Speed of Wireless Signal
- Working on unlicensed frequency spectrum of 60 GHz.
- While 802.11ac is using up to 8X8 MIMO, 256 QAM modulation and 40GHz channel, 802.11ad with only one spatial stream, 64 QAM modulation and one frequency channel can have higher speeds.
- Thanks to the higher frequency, the same area of one 2.4 GHz antenna, can contain 32 or even more 60 GHz antennas
- Beamforming with so many MIMO multiple antennas allow wireless transfers of multiple wireless clients very close to each other.
- Much less interference
- There is no problem with the range in the clear line of sight environment without obstacles like walls
- The biggest problem is with the physical obstacles like walls and floors
Compatibility with older WiFi standards
One of the greatest benefits of the WiGig is that devices will be backward compatible with the ac and n signals. You can have the ultra fast wireless speeds up to 7 Gbps and if there is a problem, you will be transferred to 802.11ac or 802.11n WiFi signals.
Do you Really Need a Gigabit Wireless Speeds of 7 Gbps
The benefit of WiGig is not only “just a higher wireless speed”. It is the ability to give ultra wireless speeds for some demanding users, and the majority of “normal users” will not have a problem with the congestion.
Streaming video and audio need more bandwidth. The WiGig is the perfect solution for the wireless HDMI links and quality surround systems.