Well, for sure, you can only run 1024 QAM on "bluebird days," but that's the point of adaptive modulation. Although having this sort capability that can only be used under the right conditions would seem like a huge waste in the consumer electronics space, infrastructure is a completely different space.
It would be interesting to know how often the system can actually operate in 1024 QAM mode in the real world. In a pure AWGN channel, 1024 QAM requires "only" four times as much power as 256 QAM at the same BER, but the situation quickly gets much worse in the presence of interference.
The 25% capacity gain over 256 QAM is probably well worth the higher electric bill, but what is the effective capacity gain on a typical long-haul system? Can an operator expect to operate in 1024 QAM mode 25% of the time, 75% of the time, or what?
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.