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jzws
Member Since: November 4, 2010
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Blog Posts: 28
Posts: 29

John Walko is a technology writer and editor who has been covering the electronics industry since the early 1980s. He started tracking the sector while working on one of the UK's oldest weekly technology titles, The Engineer, then moved to CMP's flagship UK weekly, Electronics Times, in a variety of roles including news deputy and finally editor in chief. He then joined the online world when CMP started the EDTN Network, where he edited the daily electronics feed and was founding editor of commsdesign.com (which, over the years, has become the Wireless and Networking Designline). He was editor of EE Times Europe at its launch and subsequently held various positions on EE Times, in the latter years, covering the growing wireless and mobile sectors.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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