Cohere’s breakthrough OTFS technology perfectly scales MIMO without signal drops or fading in every topography, including high-speed mobility
February 17, 2016
SANTA CLARA, Calif., – wire4tech – Cohere Technologies (cohere-technologies.com) today announced that comprehensive trials of its OTFS technology validated its ability to consistently maintain high-speed connectivity, even when encountering the most difficult scenarios for wireless networking. Cohere’s OTFS outperformed all other modulation schemes that were tested , and was able to extract high-speed capacity that perfectly scaled with the addition of additional antennas, making OTFS a true breakthrough.
“5G is not only the next generation of wireless network technology, but a necessary evolution to address both the increased number of devices on wireless networks, and the increased demand for capacity by each device,” said Shlomo Rakib, CEO of Cohere Technologies. “The goal is to deliver gigabit speeds on networks, but there are numerous technical challenges that make uniform delivery – outside of a laboratory – impossible with today’s radio access network (RAN) technology. The technical trials just completed show that Cohere has solved these technical challenges, and we can start helping mobile network operators evolve their infrastructure to higher-speed 5G networks.”
In a major wireless network technology first, capacity scaled perfectly as additional OTFS-enabled MIMO antennas were added to the configuration. Because today’s MIMO radios have substantial signaling overhead and lack visibility into the channel state, they lack the ability to scale linearly as more antennas are added to the array. Since OTFS is a highly-efficient modulation scheme and has precise channel state awareness, it solves a significant technical challenge for enabling Gigabit 5G.
Unlike one dimensional channels currently used in 4G and LTE networks, OTFS – which stands for Orthogonal Time Frequency and Space – is a paradigm shift in wireless networking that creates a two dimensional view of the delay and Doppler of the wireless channel. Through this two dimensional view, OTFS reveals the geometry of the channel and captures precise channel state information from all distributed antennas. With this channel state information, OTFS overcomes inherent challenges to high-speed wireless connectivity and MIMO – primarily signal fading and signal reflection – and ensures excellent signal reception throughout coverage areas while also maximizing throughput. The benefits to network operators are 100 percent coverage in the intended area, greatly increased data rates and increased opportunities for significant cost savings.
“Mobile network operators continue to be challenged in harnessing existing spectrum to achieve greater efficiencies in mobile broadband connectivity,” said Sathya Atreyam, research manager for the worldwide wireless network infrastructure practice at IDC. “It is imperative for the next generation radio access technologies to not only consider mitigating interference, ensuring pervasive coverage and avoiding signal degradation, but more importantly do all this with the most viable economic model.”
Though Cohere Technologies is preparing to produce Massive MIMO radios that include 64 x 64 antenna arrays, the company’s trials – conducted in partnership with wireless operators – used currently available MIMO radios with 2 x 2 and 4 x 4 antenna arrays.
The tests spanned urban settings with tall buildings, mountainous regions, rural settings and moving vehicles, all at various distances, with and without line-of-site configurations. While OFDM-based radios used for comparison would fade, drop signals or lose capacity, the OTFS radios never faded – even at distances beyond 4 km – and maintained connectivity, even in the most challenging mobile scenarios. The tests were able to maintain a minimum of 4bps/Hz in 10MHz achieving at least 120 Mbps up to 320Mbps.
“Network engineers understand that the most common uses of mobility are also typically the most challenging,” added Rakib. “People using mobile data in cars, moving trains or even just walking down the street can present an enormous technical challenge for the current modulation schemes being considered for 5G networks. But Cohere’s OTFS easily handled them all, without fail and at speeds that astounded our network partners in our trials.”
Cohere will be showcasing its OTFS technology to mobile network operators in private meetings at Mobile World Congress later this month. To request a meeting with Cohere and learn how OTFS can enable the higher speeds and more capacity on existing infrastructure, contact firstname.lastname@example.org.
Download logos and images from the OTFS tests at bit.ly/otfstests
About Cohere Technologies
Cohere Technologies is solving the most pressing challenges in wireless communications. Cohere has developed groundbreaking technology with broad applications for wireless communication called Orthogonal Time Frequency and Space (OTFS). OTFS is a new modulation scheme that delivers 100 percent coverage, 10x spectral efficiency and a 50 percent cost savings over existing solutions by perfectly capturing the wireless channel. Combined with traditional modulation schemes, OTFS extends the benefits of this 2D modulation to existing platforms as required for the future of 5G mobility. Cohere plans to productize OTFS for backhaul, fixed wireless access, 5G.
Follow Cohere on social media:
- Twitter: @CohereOTFS
- Facebook: Cohere Technologies
- Google+: Cohere Technologies
- LinkedIn: Cohere Company Page
More information about Cohere Technologies is available at www.cohere-technologies.com
OTFS is a trademark of Cohere Technologies. All other trade names referenced are the service marks, trademarks or registered trademarks of their respective companies.
# # #
Cohere Technologies media contact: