Keyhole effect in MIMO wireless Channels - Measurements and Theory
Författare
Summary, in English
It has been predicted theoretically that for some environments, the capacity of wireless multiple-input multiple-output systems can become very low even for uncorrelated signals; this effect has been termed "keyhole" or "pinhole". In this paper the first unique measurements of this effect are presented. The measurements were performed in a controlled indoor environment that was designed to obtain a keyhole channel. We analyze limitations due to measurement imperfections for measurement-based capacity calculations and keyhole investigations. We further present a bound for the higher eigenmodes as a function of the finite measurement signal-to-noise ratio and multipath component leakage. The bound is compared to the measurement results and shows excellent agreement. Finally, we analyze the envelope distribution and, as expected from theory, it follows a double-Rayleigh distribution
Publiceringsår
2006
Språk
Engelska
Sidor
3596-3604
Publikation/Tidskrift/Serie
IEEE Transactions on Wireless Communications
Volym
5
Issue
12
Dokumenttyp
Artikel i tidskrift
Förlag
IEEE - Institute of Electrical and Electronics Engineers Inc.
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- measurements
- pinhole
- eigenvalue
- double-Rayleigh
- capacity
- MIMO
- keyhole
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1536-1276