MM-wave long-range wireless systems

Multi-gigabit-per-second (multi-Gb/s) wireless access is attracting a great deal of interest as a way of catching up with the expanding broadband society. The Gigabit Ethernet (GbE) market already exceeds the Fast Ethernet market, and 10 GbE is presently the fastest-growing segment of the Ethernet market. Television programming based on the high-definition TV standard (HDTV), which requires 1.5-Gb/s data rates, is widely accepted in studios. For relaying broadcasts of multiple HDTV signals without the delay caused by data compression, new broadband wireless systems are necessary. Likewise, the standardization of digital cinema has progressed, and digital cinema with a 4 K delivery system will require a data rate of 3-6 Gb/s when the data is not compressed. The 10 GbE protocol is a strong candidate for delivering both HDTV and digital cinema 1], 2]. Wireless systems that can be directly connected to 10 GbE will be highly beneficial for those bandwith-consuming applications.