Thanks for keeping this blog. It is wonderful to find this much good info and experience in one place. I will, hopefully, be doing some of this in my job in the very near future. I am late to the discussion, but I think it is valuable to keep “simulation” and “emulation” conceptually distinct. The key distinction is the ability to create test-beds for physical hardware and systems under test. If I have a new device, I cannot “plug it into” a simulation to discover its behavior. I can only “plug it into” a simulation when I already know how it behaves in all relevant circumstances. How do I find this information out? I plug it into an “emulator” first! Then, I subject it to every interesting condition, measure its behavior, THEN I can write a simulation of it. Think of it this way: if I shoot you with a good emulation of a gun, it will probably — literally — kill you. If I shoot you with a good simulation of gun, you will just have to wear a sign that says, “I’m simulating a corpse.”
Raleigh subsequently founded Clarity Wireless in 1996 and Airgo Networks in 2001 to commercialize the technology. Clarity developed specifications in the Broadband Wireless Internet Forum (BWIF) that led to the IEEE (commercialized as WiMAX ) and LTE standards, both of which support MIMO. Airgo designed and shipped the first MIMO-OFDM chipsets for what became the IEEE standard. MIMO-OFDM is also used in the standard and is expected to play a major role in and fifth generation ( 5G ) mobile phone systems.