Measured capacity gain using waterfilling in frequency selective MIMO channels
Publikation/Tidskrift/Serie: The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2002 , vol 1-5, Proceedings
We analyze the channel capacity of multiple-input multiple-output (MIMO) systems in frequcncy selective channels, with channel knowledge at the transmitter side. An optimum transmission scheme uses Shannon's principle of waterfilling jointly in the frequency and the spatial domain. However, we show in this paper that the largest gain by using waterfilling resides in the spatial domain, and that the capacity gain from the frequency domain is very small for MIMO systems. We quantify the gain for a theoretical Rayleigh fading channel model and for microcellular channels as measured in an enclosed court-yard.
- Technology and Engineering
- eigenvalue distribution
13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
- ISBN: 0-7803-7589-0