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Latency has become a critical factor in many communications applications these days. Latency, of course, is the short delay that occurs due to the time it takes a signal to travel from one point to another, either in free space or some medium. In the past, latency did not matter that much. After all, most electronic signals travel at the speed of light or a bit less, and for most of us that’s fast enough. We can never go faster than that anyway. Let’s face it, there’s no such thing as zero latency. But less would be welcome.
Some of the newer communications applications require or would like less latency. Factory control systems often need short and deterministic timing to be successful. The new 5G wireless systems have been created to...