Investigation of MIMO channel correlation and capacity based on partial embedded RF measurements

In this paper, a technique for estimating the capacity and correlation of a MIMO channel is investigated by measuring complex signal ratios between receiver branches. The original channel matrix [H] is decomposed into a product of a diagonal matrix [D] and a matrix [G] of RF-measurable ratios of the...

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Bibliographic Details
Main Authors: Jemmah, A., Kouki, A.B.
Format: Conference Proceeding
Language:English
Subjects:
Antenna measurements
Channel capacity
Channel estimation
Electric variables measurement
Matrix decomposition
MIMO
Radio frequency
Radio transmitters
Receiving antennas
Transmitting antennas
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Summary:In this paper, a technique for estimating the capacity and correlation of a MIMO channel is investigated by measuring complex signal ratios between receiver branches. The original channel matrix [H] is decomposed into a product of a diagonal matrix [D] and a matrix [G] of RF-measurable ratios of the H matrix elements. The RF measurements help provide partial channel estimation without computational overhead to the receiver. We present two RF measurement devices and discuss their implementation and interface to a MIMO receiver. Using Monte Carlo simulations, we show that the correlation properties of the original H matrix may be inferred from those of the G matrix thus leading to an indirect measurement of matrix channel correlation. Such information is very important for adaptive MIMO systems.
ISSN:0840-7789
2576-7046
DOI:10.1109/CCECE.2004.1345088