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Useful for an update (20160530)?
(source: http://www.telecomasia.net/content/huawei-validates-key-5g-technologies) Huawei validates key 5G technologies... Dylan Bushell-Embling... May 30, 2016... telecomasia.net
Huawei has announced it has completed the first stage of key 5G technology tests as part of a series of 5G field trials organized by the IMT-2020 5G Promotion Group.
The vendor completed outdoor macro-cell tests in Chengdu, China consisting of a number of key 5G enabling technologies and an integrated 5G air interface.
As part of the trial, Huawei evaluated three foundational technologies - filtered orthogonal frequency division multiplexing (F-OFDM), sparse code multiple access (SCMA) and polar code - the air interface technology.
Results show that F-OFDM was able to improve system throughput by 10%, SCMA was able to increase uplink connections by 300% and downlink system throughput by up to 80%, and polar code provided coding gain of between 0.5dB and 2dB compared to the code used in LTE systems.
Huawei said results of the test demonstrate that the new 5G air interface technology can improve spectral efficiency and meet the ITU-R's diverse service requirements for the standard.
The IMT-2020 5G Promotion Group was launched by the China Academy of Information and Communication Technology to encourage joint efforts to promote 5G field trials and evaluations among the global mobile industry.
Earlier this year the group announced a three-phase 5G trial plan spanning from 2016 to 2018.
"Is 5G Over-Hyped?
" . . . [speed] depends on what frequency bands are used — 6GHz, 28GHz, 27 GHZ. The higher the frequency the more fibre you need closer to the user in order to deliver those higher speeds. Currently less than 50% of mobile towers are connected to fibre, and the rollout of fibre can't keep up with the rapid deployment of mobile broadband. 5G means more mobile towers so it is unlikely that all of these towers will be linked to fibre in the near future. [etc.]"
- Current status is negotiation and planning. Results are a matter of what year. A few users may expect all these wonders to become an everyday experience the same year that the new standard makes its splashy first appearance, or the following year. Most of those will be disappointed. Deployment will take years. Years after first 4G, it isn't everywhere yet, and won't be when 5G starts. Jim.henderson (talk) 13:21, 3 June 2016 (UTC)
5g demo from Sprint
"Sprint Shows Off 5G With Blazing Fast Speeds At Copa América Centenary”
“The demonstration employed beam stitching, which works by tracking the device in use, selecting the best antenna and sending the signal to a set location.”
"An FCC spectrum auction last month also showed strong implication, further paving the way toward fast and reliable 5G networks. AT&T, Verizon and T-Mobile will likely spend billions on 600 MHz spectrum, but Sprint is not interested. Sprint already has plenty of 2.5 GHz spectrum – more than any of its rivals – and when it comes to 5G, it's considered low-frequency spectrum. This means that it should be better at penetrating walls and buildings and traveling farther, thus translating to wider coverage.”
Also — up to 2Gbps during demo; used 73 GHz millimeter wavelength spectrum for demo.
As of June 2016
"5G remains the driver for new product development . . .
"However there is no standard for 5G deployments and no one knows what the final specs will look like. Consensus suggests that 5G will utilize Massive MIMO (multiple input, multiple output) antennas — perhaps dozens (or hundreds) per basestation — each with their own spectrum and modulation scheme. Thus, every RF supplier — no matter how narrow their focus — will claim a slot among the MIMO attachments. "If you can’t find channel bandwidth on the upper spectrum of the millimeter wave bands, consider carrier aggregation at lower frequencies. WiFi and LTE, for example, will likely “co-exist” on the same tower.
"Orthogonal frequency division multiplexing (OFDM) is one way of putting additional data channels on a given frequency range . . . . OFDM is a modulation technique, which can utilize multiple carriers, within an allocated bandwidth and could enable a 10 Gbits/second data. Each carrier utilize one of the several available digital modulation techniques such as binary phase shift keying (BPSK) or quadrature phase shift keying (QPSK), or quadrature amplitude modulation (QAM) with 256 or 1024 constellation points. (802.11ac, for example, uses a 256-point QAM for every data bit transmitted.)"
http://www.eetimes.com/author.asp?section_id=36&doc_id=1329841 accessed 20160707
Power amplifier research with implications for 5G phones
"Purdue research could lead to faster cell phone technology
"[A team of researchers at Purdue created for the first time] power amplifiers (components commonly used in cell phones) using silicon technology that are efficient enough to be suitable for 5G cell phones. . . ."
'Stéphane Téral, an analyst at IHS Markit, recently weighed in by criticizing the use of “5G” to describe sub-6 gigahertz developments in a research note.'
'Many [carriers] have set their sights on much shorter millimeter waves that fall between 30 and 300 GHz. There are plenty of frequencies available in the millimeter-wave range, because they’ve been used only for specialized applications such as remote sensing and military radar. But waves at these frequencies can’t travel as far or make it through as many obstacles . . .'
'[5G analyst Anshel] Sag thinks it’s a mistake to rule out anything other than millimeter waves as true 5G. He says 5G New Radio, a wireless standard defined by the global wireless standards group 3GPP, should count as 5G no matter which frequencies it handles.'