Exhaustive comprehensive testing has become ever more critical as wireless communication advances and relies on increasing signal processing power and sophistication to extract ever more capacity and performance from a given amount of spectrum. We are witnessing this with successive releases of 5G and also now with WiFi as that reaches out towards comparable levels of performance. This has consolidated testing among just a few specialist vendors such as the USA’s Keysight Communications, the UK’s Spirent and Germany’s Rohde & Schwarz (R&S). All three of these have been active recently promoting not just their credentials but also the fundamental role testing is now playing in ensuring the most advanced versions of both cellular and WiFi products will perform as hoped…