Browsing International Telemetering Conference Proceedings, Volume 40 (2004) by Authors
A GRAPHICAL USER INTERFACE MIMO CHANNEL SIMULATORPanagos, Adam G.; Kosbar, Kurt; University of Missouri – Rolla (International Foundation for Telemetering, 2004-10)Multiple-input multiple-output (MIMO) communication systems are attracting attention because their channel capacity can exceed single-input single-output systems, with no increase in bandwidth. While MIMO systems offer substantial capacity improvements, it can be challenging to characterize and verify their channel models. This paper describes a software MIMO channel simulator with a graphical user interface that allows the user to easily investigate a number of MIMO channel characteristics for a channel recently proposed by the 3rd Generation Partnership Project (3GPP).
MIMO CHANNEL TIME VARIATION AS A FUNCTION OF MOBILE USER VELOCITYPanagos, Adam G.; Kosbar, Kurt; University of Missouri – Rolla (International Foundation for Telemetering, 2004-10)The analysis of multiple-input multiple-output (MIMO) communication systems often assumes a static, or quasi-static, environment. Platform motion and changes in the environment makes this an unreasonable assumption for many telemetry applications. This paper uses computer simulations to characterize the time variation of MIMO channel parameters when there is relative motion between the transmitter and receiver. These simulation results yield explicit time intervals over which a MIMO channel can be considered static for a given relative velocity and propagation environment. These results can be used to predict the practical limitations of proposed MIMO system algorithms.