The measurement and characterisation of multiple-input multiple-output (MIMO) channels has gained increasing attention over recent years. Previous analysis of MIMO measurements has generally focussed on the evaluation of the capacity of such systems in differing locations and configurations. We present measurements made in an indoor environment at 5.2 GHz, specifically to investigate temporal channel variation. Line-of-sight and non-line-of-sight situations are compared by means of an analysis of the rate of variation in the powers of the 'orthogonal spatial channels' comprising the overall MIMO channel. The conclusions are extended to encompass the rate of variation in performance of MIMO channels under different environmental conditions
Sponsorship: The authors gratefully acknowledge the financial contribution of the UK EPSRC, HEFCE (JREI’98), QuinetiQ Ltd. and the IST SATURN project for their support of parts of this work.
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Name of Conference: 54th Vehicular Technology Conference 2001 (VTC 2001-Fall)
Venue of Conference: Atlantic City, NJ
- MIMO, time-varying channels