MIMO in advanced radio networks: Requirements and measurement solutions
Rohde&Schwarz Spain
All current advanced radio networks, including mobile radio networks (3GPP UMTS with LTE) and wireless networks (WLAN), are subject to continuous data rate growth expectations. Classical transmission techniques, such as higher order modulation schemes and higher bandwidths have reached their respective limits. However, use can be made of a very complex technology known as "multiple input multiple output" (MIMO). This technology is associated with increased requirements for measurement equipment in transmitters and receivers. This article describes the different techniques used by MIMO with their implementation in different standards. This article also details the range of test instruments needed in the different radio standards to achieve MIMO-ready mobile stations and base stations.
