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Category Archives: 60GHz Unlicensed Wireless
NHL 60GHz Wireless HD SDI In-net GoalCam by VidOvation went on air twice on NBC Sports during the Dallas DAL vs Minnesota MIN hockey game. To learn more visit http://vidovation.com/Wireless_Video/60ghz_unlicenesed_wireless_video
Cutting-edge Wireless Video Transmission over
60 GHz Spectrum
Transmitting video wirelessly over the 60 GHz spectrum can be an ideal solution for line of sight applications. Clearly, by definition, a wireless solution eliminates the need for cabling such as fiber or coax, which can be difficult or impossible to use in many instances. Additionally, other wireless frequencies come up short for two major reasons. First, lower frequency solutions like Wi-Fi do not have the bandwidth to transport uncompressed HD video, and would therefore need to compress the video at its source, transmit it across wirelessly, and then uncompress the video at the receive end. This would both add latency and, much more importantly, reduce video quality, which is critical. Second, these lower frequency solutions in unlicensed bands are subject to a great deal of interference, which can adversely affect, and even shut down, a wireless video stream. This would clearly be unacceptable in many situations, and because of its unlicensed status, anyone with a Wi-Fi transmitter could, accidentally or maliciously, interfere with these transmissions.
While 60 GHz is also an unlicensed band, it differs from the lower unlicensed frequency in two significant ways. The first is in terms of sheer bandwidth. While Wi-Fi spectrum allocation at 2.4 GHz is roughly 85 MHz wide, the unlicensed bandwidth allocated to 60 GHz is 7 GHz wide – covering the entire band from 57-64 GHz in the US (and is the same or similar worldwide). This massive increase in bandwidth translates into much higher capacity channels that allow for the transmission of fully uncompressed high definition video at the standard rate of 1.485 Gbps. Therefore, there is no need to impact video quality or system latency by compressing the video stream.
The other major difference from lower unlicensed frequencies is the directionality and very high spectral reuse capabilities at 60 GHz. As this implementation utilizes focused point-to-point antennas, it is nearly impossible to interfere with the signal, even in the highly unlikely case of someone actually having a functioning 60 GHz transmitter. This technology has been utilized by the National Hockey League for the In-Net GoalCam for goal camera verification and instant replay. Every game of the 2012 Stanley Cup Playoffs and Final uitlized the VidOvation In-net GoalCam System. Other application include ENG, news, building-to-building links, church over-flow venues, college campuses, corporate conferenceing, professional audiovisual just to name a few.
– See more at: http://vidovation.com/Wireless_Video/60ghz_unlicenesed_wireless_video#sthash.FQ74fFna.dpuf
How to Transmit 4K Video or 10 Gbps Data Wirelessly
Philadelphia SMPTE & SBE18 Joint Meeting Notice
Guests and Non-members welcomeDate:
Tuesday, March 8th, 2016
6:15pm – Refreshments (courtesy VidOvation)
7:00pm – PresentationLocation:
Valley Forge Corporate Center
905 Madison Ave.
Norristown, PA 19403
Matthew Murphy – Lerro
“How to Transmit Wireless 4K Video or 10 Gbps Data”
Wednesday, February 10, 2016
5:30 – 6:00 PM social hour and networking
6:15 – 8:00 PM technical meeting
Speaker: Jim Jachetta, VidOvation
The 60GHz band, with a 7GHz bandwidth, promises to provide wireless broadband network connectivity at distances of up to one kilometer at data rates up to 10 Gbps. In this presentation we’re going to look at some of the different challenges that 4K video presents in wireless transmission. If you’re a broadcaster, you might be looking for higher resolution. If you’re a sports league, you might want a higher frame rate for instant replay. We’ll touch on some of these subjects and we’ll share with you some of the future developments in the area of 4K wireless video transmission.
Jim Jachetta Bio:
Jim Jachetta is co-founder, CTO, Executive VP, and chief problem solver of VidOvation. With over 30 years of experience in designing, integrating and delivering wireless, fiber optic, and IP communication and transmission systems, Jim drives VidOvation to create solutions using world class technology to make the “impossible” and “never been done before” a cost effective, everyday solution.
Jim’s expertise includes streaming video and webcasting, wireless video communications, IPTV, video over wired IP and Ethernet networks, CATV and RF video transport over category cable, video over category cable and coax, and video and RF over fiber optic cable and fiber optic networks. Jim and his team have produced results for many organizations by implementing comprehensive systems for the NHL, NFL, Pentagon, The Las Vegas City Center, and the US Marine Corps to name a few.
In addition, Jim Jachetta has authored multiple articles and white papers including a chapter on Fiber Optic Transmission Systems in National Association of Broadcasters Engineering Handbook and has a Master of Science in Electrical Engineering from NYU Polytechnic University. Jim rounds out his design and implementation expertise as a co-author on two patents.
TORONTO—The White House has its Situation Room. The National Hockey League has one, too. Unlike the White House version, the NHL Situation Room is solely concerned with hockey; specifically, live monitoring of all the plays taking place in up to 16 simultaneous NHL games/feeds across North America.
The NHL Situation Room is located in a 10th floor office inside a tower adjacent to Toronto’s Air Canada Center, in the heart of downtown.
The room itself measures about 20×40 square feet in size. Walk in, and the first thing you see is the front wall HD video display along one of the walls. The overhead projector-driven central screen measures nearly 7 feet diagonally, and can be split to show 16 separate video windows. Since there are 30 teams in the NHL, this means that the central screen can show all 15 games at once, with one video window to spare.
Looking towards this screen is “The Bridge,” the room’s length-wise control center, where the day’s game managers stay in close contact with game officials. This is where Mike Murphy and his key people sit when the games are on; eyes glued to the TVs, and watching the overhead red strobe lights that flash whenever a call is coming in from a game. (There’s too much going on in the NHL Situation Room to rely on audio telephone alerts.)
Each NHL Situation Room workstation is equipped with four 24-inch HD monitors. The first screen on the left shows the game as distributed on a satellite TV feed. The next two screens show real-time feeds direct from the arena’s on-site broadcasters (home and away) via fiber-optic cable. Thanks to satellite latency, it is common for the satellite feed to be up to 15 seconds behind the live feed.
The fourth HD screen on the right, with its screen split into four video windows, is the one that really matters. Using feeds synchronized off-site by NeuLion in New York—and fed to Toronto via fiber-optic cable—the top two windows show the two broadcast arena fiber-optic feeds. The lower two windows show the goal zones at both ends, using either an operator- selected above-net or in-goal camera. (These cameras belong to the NHL, and their feeds are only shown on air if the NHL decides to release the footage to the broadcasters.)
New high-speed semiconductor technology has enabled the development of affordable, compact wireless systems that can operate in the unlicensed 60 GHz frequency range.
60 GHz systems on the market today offer completely uncompressed HD-SDI operation at 1.5 Gbps, including any embedded audio channels, metadata, SMPTE time code, etc. Because the signals are uncompressed, no encoding/decoding delay is present in the system, making it ideal for sports, live interviews and other time-sensitive applications. Solutions are also available in the 70/80 GHz and the 90 GHz frequency bands, including high speed Ethernet links that can support bi-direction GigE speeds, which is great for high performance IP video and audio networking.
Signals operating at these very high frequencies (also known as the millimeter band) have properties that offer some important advantages for video transmission. First and foremost, these signals are readily absorbed by the atmosphere, so there is a significantly reduced chance of a signal propagating beyond its intended receiver. This property also greatly reduces the amount of interference from other sources, and makes it possible for many devices to be used in close proximity. Another advantage of high radio frequencies are their short wavelengths, which permit use of very small, high-gain parabolic or horn antennas. These allow highly focused radio beams to be used, further limiting spurious reception and signal interference. Of course, there are limits to the distances over which these signals can be used, with a practical limitation of about 600m or 2000ft. Fortunately, this range is more than adequate for most venues.