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MIT Researchers Triple Wireless Speeds
August 29, 2016 by admin
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MIT researchers have uncovered a way to transfer wireless data using a smartphone at a speed about three times faster and twice as far as existing technology.
The researchers developed a technique to coordinate multiple wireless transmitters by synchronizing their wave phases, according to a statement from MIT on Tuesday. Multiple independent transmitters will be able to send data over the same wireless channel to multiple independent receivers without interfering with each other.
Since wireless spectrum is scarce, and network congestion is only expected to grow, the technology could have important implications.
The researchers called the approach MegaMIMO 2.0 (Multiple Input, Multiple Output) .
For their experiments, the researchers set up four laptops in a conference room setting, allowing signals to roam over 802.11 a/g/n Wi-Fi. The speed and distance improvement is expected to also apply to cellular networks. A video describes the technology as well as a technical paper (registration required), which was presented this week to the Association for Computing Machinery’s Special Interest Group on Data Communications (SIGCOMM 16).
The researchers, from MIT’s Computer Science and Artificial Intelligence Lab, are: Ezzeldin Hamed, Hariharan Rahul, Mohammed Abdelghany and Dina Katabi.
Courtesy-http://www.thegurureview.net/mobile-category/mit-researchers-develop-technique-to-triple-wireless-speeds.html
Courtesy-http://www.thegurureview.net/mobile-category/mit-researchers-develop-technique-to-triple-wireless-speeds.html
Memory Chips Appear To Be Dropping
The production value of memory chips in Korea fell by a percent on the previous quarter, affected mainly by a low bit growth of DRAM and NAND flash chips from SK Hynix.
Beancounters at Digitimes Research said that sales totaled US$12 billion in the second quarter of 2015, increasing 1 per cent from the previous quarter,
Server-use DRAM products became the primary product line for SK Hynix for the first time in the second quarter as sales of its PC-use DRAM chips suffered a significant decline compared to a quarter earlier.
Price reductions of PC DRAM chips were greater than market expectations in the second quarter due to an oversupply in the market, affecting sales performance of SK Hynix.
Samsung was less affected by declining PC DRAM prices because mobile DRAM products accounted for 35 per cent of its total DRAM income.
Samsung memory and semiconductor revenues hit a record high in the second quarter.
For the third quarter, the bit growth rates of NAND flash shipments at Samsung will rise 10 per cent and SK Hynix will increase 13 per cent on quarter.
SK Hynix will manage a five to eight per cent growth while Samsung is expected to see shipments of its DRAM chips grow 12-14 per cent.
Digitimes Researcher flipped their iChing coins and came to the conclusion that Korea’s memory products are expected to increase 3 per cent on quarter and 12 per cent on year in the third quarter of 2015.
Source
USB 3.1 Coming Later This Year
The emerging USB 3.1 standard is on track to reach desktops as hardware companies release motherboards with ports that can transfer data twice as fast as the previous USB technology.
MSI recently announced a 970A SLI Krait motherboard that will support the AMD processors and the USB 3.1 protocol. Motherboards with USB 3.1 ports have also been released by Gigabyte, ASRock and Asus, but those boards support Intel chips.
USB 3.1 can shuffle data between a host device and peripheral at 10Gbps, which is two times faster than USB 3.0. USB 3.1 is also generating excitement for the reversible Type-C cable, which is the same on both ends so users don’t have to worry about plug orientation.
The motherboards with USB 3.1 technology are targeted at high-end desktops. Some enthusiasts like gamers seek the latest and greatest technologies and build desktops with motherboards sold by MSI, Asus and Gigabyte. Many of the new desktop motherboards announced have the Type-C port interface, which is also in recently announced laptops from Apple and Google.
New technologies like USB 3.1 usually first appear in high-end laptops and desktops, then make their way down to low-priced PCs, said Dean McCarron, principal analyst of Mercury Research.
PC makers are expected to start putting USB 3.1 ports in more laptops and desktops starting later this year.
Are Flash Drives Becoming More Secure?
Flash drives in mobile devices are set to become faster and secure thanks to a new standard signed off by the JEDEC Solid State Technology Association.
eMMC version 5.1, will allow for a new mobile storage that will provide faster access. Flash drives based on eMMC 5.1 can handle 4K streaming and more data-intensive tasks.
Samsung has started making 64GB, 32GB and 16GB drives based on the new standard and is shipping units to customers, but has not said whether those drives will be used in the Galaxy S6 smartphone, which will be announced early next month at the Mobile World Congress trade show.
Samsung’s 64GB eMMC 5.1 has a random read performance of 11,000 IOPS (input/output operations per second) and write performance of 13,000 IOPS, compared to a rough performance of 7,000 IOPS for 64GB drives based on the previous eMMC 5.0 standard.
The speed improvements comes through some cache and data-streaming improvements.
There is also something called Secure Write Protection ensures only specific entities are able to access files and lock or unlock storage.
Is The Demand For DRAM Slowing?
Hynix has reported a slowing down of growth in the memory chip profits as it posted its first drop in quarterly profit in two years, casting doubt on medium-term revenue growth.
SK Hynix President Kim Joon-ho told analysts that the problem was a change in product mix and a transition to more complex production technology will crimp third-quarter shipments growth for the key DRAM business. Analysts are concerned that DRAM shipments growth will be increasingly limited in the latter half of the year, given the technology migration issues, which would lead to slower top-line growth. But Hong said such concerns were overblown, as limited shipments growth would help keep supply tight and support chip prices.
Hynix posted an operating profit of $1.07 billion for the April-June period which is not to be sneezed at. But that result was 2.7 percent below the same quarter a year earlier. The other problem is the rise in the value of the won, which toll on revenue, which fell 0.2 percent compared with the previous corresponding period. The currency on average gained more than 9 percent against the dollar during the April-June quarter from a year ago.
President Kim said growth in shipments of DRAM chips, mainly used in personal computers and servers, would slow to a mid-single-digit percent rate in the third quarter, from 13 percent in the April-June period. Shipments of NAND chips, typically used in mobile devices, would slow to a high 20 percent rate from 54 percent.
He said that DRAM market trends will remain favorable due to better-than-expected demand for personal computers as well as data centre-related server demand.
“The launch of new mobile products by major companies and the development of LTE-related demand in China will likely keep demand-side conditions firm,” he added.
Analysts played down concerns of a supply glut arising from the company’s plans for capital investment in the second half of 2015, and expected short-term earnings to remain firm.
Intel Reveals 750 Series SSD
During the 3D Revolution 2014 presentation held in Rome, Intel has showed its updated SSD roadmap unveiling the new August Ridge SSD 750 Series which will be available in multiple form-factors, including lately popular M.2.
Spotted by Techpowerup.com, the Intel SSD 750 Series will be aimed at both the consumer and the professional market segments and be available in three form-factors, including 2.5-inch SATA 6Gbps, mSATA 6Gbps as well as the M.2 form-factor.
The new 750 SSD Series will most likely be available in all the popular capacities, up to 960GB, and be based on 20nm MLC NAND flash.
Unfortunately, the roadmap does not reveal many details regarding the performance of the SSD 750 Series but does note that it should launch in Q4 2014.
Can Anyone Challenge Samsung’s SSDs?
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You have seen that many companies that were selling SSD drives are slowly moving away from retail and etail consumer sales. Patriot and OCZ are among them and one of the key reasons is that Samsung has insanely attractive prices that are hard to fight.
Currently Samsung’s SSD 840 EVO series 250GB sells for about $2000, while Amazon in the US is selling the same drive for $177.99. The 120GB version in EU sells for €89.90 while US shops sell it for $99.99. Samsung offers a 500 GB SSD for $339.99 and at Newegg Mushkin, OCZ and similar priced or slightly cheaper but for 480GB drives. Toshiba Q series are the cheapest in this category with $319.99.
These are not the fastest or the cheapest drives on the market, but they are some of the most affordable per gigabyte and they offer quite good performance. In addition, consumers simply trust the Samsung brand and many of them are buying Samsung drives thanks to brand recognition, putting a lot of pressure on the smaller players. Just as it happened with the RAM memory market, profit margins on SSD drives went so low that you need to sell huge quantities to support your business model.
This is simply not a viable option for smaller players.
Samsung has its own chip production, has its own notebooks to put your drives in and it apparently is doing well in the market. Event close competitors are confirming that Samsung puts a lot of price pressure on everyone else. It sort of helps if you have your own NAND chip fabs.
Intel Launches 530 Series SSD
Intel’s new SSD 530 series was detailed a while ago, but now it is finally official. Intel has formally announced the new drives in three form factors: mSATA, M.2 and 2.5-inch.
The drives will be available in a wide range of capacities, starting at 80GB, through 120GB, 180GB, 240GB, 360GB and 480GB for 2.5-inch drives. As for M.2 and mSATA drives, they will be available in 80GB, 120GB, 180GB and 360GB capacities.
Intel’s new 530 drives are based on 20nm MLC flash and the brains behind the brawn come from LSI, in the form of the SandForce SF-2281 controller. Although transfer speeds will vary depending on capacity, the fastest 530-series drives will deliver read speeds of up to 540MB/s and write at 490MB/s. As for random performance, they boast 41k IOPS in random read and 80k IOPS in random write.
Intel also says the 530-series is its most power efficient storage product to date, which is hardly surprising, but it is good news for notebook vendors who will use mSATA units.
Can DRAM Be Saved By Win8?
Microsoft’s roll-out of Windows 8 is not expected to generate a significant increase in DRAM shipments, according to market research firm IHS iSuppli.
Other operating system roll outs have pushed up the demand for DRAM, and some had hoped that it would save the battered industry. However while iSuppli thinks that Global DRAM bit shipments are expected to increase by eight percent in the fourth quarter compared to the third quarter, this is much lower than previous Windows roll outs.
In the good old days Windows rollouts have always generated double-digit increases in quarterly DRAM shipments. Part of the problem is that Windows 8 is pretty good software and has a leaner hardware requirement. But the biggest part is that Windows 8 is not likely to deliver a significant increase in PC shipments in the fourth quarter compared to the fourth quarter of 2011, IHS said.
Clifford Leimbach, analyst for memory demand forecasting at IHS said that starting with Windows 7 and continuing with Windows 8, Microsoft has taken a leaner approach with its operating systems, maintaining the same DRAM requirements as before.
NAND SSD Prices Slowly Falling
Prices for NAND SSDs have started to fall and the industry thinks that OEM contract rates are expected to cost less than a dollar per GB by beginning of April.
Thanks to HDD prices still more than double the rates prior to Thailand floods, the gap between mainstream SSD drives and traditional hard drives has narrowed. SSD is about five times as expensive as HDD but sales are now so high because more enthusiasts are buying SSD drives that the prices are expected to fall further.
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