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Protected: How to Prevent Attacks on your Critical Wireless Transport Networks
In an era of growing security threats from terrorism, border security and immigration, attacks on critical infrastructure and general public unrest, the issue of security in communication networks is more important than ever. The new generation of IP-based wireless technology is an enabler for applications such as mobile commerce, voice over IP (VoIP) and high-definition video delivery to smartphones, but it has also opened some sinkholes in the foundation that pre-LTE architectures and applications have established.
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A Realistic Look at Link Distances of 70-80GHz Links
There has been significant growth in backhaul products operating in millimeter frequency range recently. Being subject to rain attenuation, and because different environments can have different characteristic attenuations, careful and precise calculation of theoretical distances is critical.
Read MoreThe Truth about Designing Cell Phone and Other Networks
Things at the Boston Marathon Finish Line in 1910 were much calmer—and simpler—than the 2013 edition sans cell phones and other wireless devices. Author: Unknown. (Image credit: Wikipedia).
As was demonstrated by the tragic events in Boston April 2013, cell phone networks cannot accommodate every potential caller or texter using a mobile access device in times of peak load usage—such as during a crisis occurring in real-time on television and social media. Erroneously, some pundits at the time ascribed the outage to a co-conspiracy to take down the public wireless networks. Or an action by the civil authorities to thwart additional remote control saboteurs as has happened in Spain and other places. However, the simple truth is that demand far outstripped capacity for a time in Massachusetts due to the fact that mobile phone networks are designed to function with a typical level of subscriber activity—calls, text, mobile web, etc. When virtually everyone in the vicinity of the finishline of the Boston Marathon unlocked their iPhone or Samsung Galaxy smartphone and started to communicate the unfolding story to the outside world, it came as no surprise to network designers at the mobile operators that the infrastructure slowed to a crawl then ceased to work for a time. But this was news to the general public.
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Northern California Power IRU600 Passive Repeater System Case Study
Challenge
In 2017, Northern California Power Agency (NCPA) was faced with the challenge of linking two microwave sites in mountainous terrain with no line of sight between them. They were looking for an effective, cost-efficient way to complete the microwave segment of their network in California’s Northern Central area.
Read MoreCase Study: Can Extra High Power reduce need for Space Diversity?
Q: Can Extra High Power (EHP) Radios Reduce Need for Space Diversity (SD) in Microwave Networks?
A: Yes.
- EHP radios can reduce need for SD in some microwave networks by providing an optimum level of system gain, which will reduce fading—the problem SD was intended to mitigate
- Non-reflective paths will benefit the most from EHP
- Benefits include decreased numbers of antennas and lower capex
- For example, in a recent project using EHP radios, Aviat reduced the number of required antennas by 9.27 percent and capex by 5 percent
Multiband Microwave: It’s Not Just for 80GHz Links – Applications in Traditional Microwave Bands
Multiband backhaul links consist of running multiple channels at different frequency bands on a single link to improve capacity and reliability. Currently there are several products in the market (or in development) that are using a combination of E-band and microwave frequencies. An alternative is to take advantage of the larger channels of higher frequency bands (ex: 32 GHz) and better RF performance of lower frequency bands (Ex: 11 GHz) within the traditional microwave range.
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Avoid Extra Expense: Use Extra High Power Radios Under Tower Standard TIA-222
TIA 222 standard provides tower designers with the design criteria and analysis procedures to design telecommunication tower structures. Rev-H is the latest version in a standard with a long evolution. The TIA-222 tower standard is critical to the safety and maximum equipment loads that structures can support. Rev-H was finalized late in 2017 and will take effect in most jurisdictions within the next two years.
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A Realistic Look at Link Distances of 70-80GHz Links
There has been significant growth in backhaul products operating in millimeter frequency range recently. Being subject to rain attenuation, and because different environments can have different characteristic attenuations, careful and precise calculation of theoretical distances is critical.
Read More 
Ciena And Aviat Team Up On Unified Fiber-Microwave Solution For Utilities
Building advanced utility communications networks requires a solution with superior performance that spans both fiber and microwave to meet the wide variability in terrain while improving overall cost and reliability.
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Multi-Band (70/80GHz + 6-23GHz) Backhaul
An analysis of viability of multi-band links: where/when/why…?
Multi-band backhaul links consist of running multiple channels at different frequency bands (typically 70/80G + 6-23G) on a single link to improve capacity and reliability. These links essentially operate like an extended ACM solution – giving more reliability than E-band and more capacity than the lower frequency channel operating independently.
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