Optimal Single-Port Impedance Matching for Compact MIMO Arrays

Y. Fei; Y. Fan; J.S. Thompson

doi:10.1109/GLOCOM.2007.857

Optimal Single-Port Impedance Matching for Compact MIMO Arrays

Y. Fei, Y. Fan, J.S. Thompson

School of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract / Description of output

Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield the desired characteristic of high MIMO capacity. Because of the practical infeasibility of multiport- conjugate matching, the single-port matching impedance (Zopt) which maximizes the capacity of a 2 times 2 MIMO system with coupled half-wavelength dipoles is derived in this paper. We derive Zopt for an ergodic capacity upper bound including the mutual coupling and matching networks effect. We show that the closed-form of Zopt in the high SNR regime is identical to the input impedance. The analytical results are validated by numerical simulations.

Original language	Undefined/Unknown
Title of host publication	Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Pages	4511 -4515
DOIs	https://doi.org/10.1109/GLOCOM.2007.857
Publication status	Published - 1 Nov 2007

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10.1109/GLOCOM.2007.857

Terminal array processing for cellular systems incorporating ad hoc networking techniques
Thompson, J.
EPSRC
1/10/03 → 30/06/07
Project: Research

Cite this

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title = "Optimal Single-Port Impedance Matching for Compact MIMO Arrays",

abstract = "Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield the desired characteristic of high MIMO capacity. Because of the practical infeasibility of multiport- conjugate matching, the single-port matching impedance (Zopt) which maximizes the capacity of a 2 times 2 MIMO system with coupled half-wavelength dipoles is derived in this paper. We derive Zopt for an ergodic capacity upper bound including the mutual coupling and matching networks effect. We show that the closed-form of Zopt in the high SNR regime is identical to the input impedance. The analytical results are validated by numerical simulations.",

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doi = "10.1109/GLOCOM.2007.857",

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AU - Fan, Y.

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N2 - Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield the desired characteristic of high MIMO capacity. Because of the practical infeasibility of multiport- conjugate matching, the single-port matching impedance (Zopt) which maximizes the capacity of a 2 times 2 MIMO system with coupled half-wavelength dipoles is derived in this paper. We derive Zopt for an ergodic capacity upper bound including the mutual coupling and matching networks effect. We show that the closed-form of Zopt in the high SNR regime is identical to the input impedance. The analytical results are validated by numerical simulations.

AB - Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield the desired characteristic of high MIMO capacity. Because of the practical infeasibility of multiport- conjugate matching, the single-port matching impedance (Zopt) which maximizes the capacity of a 2 times 2 MIMO system with coupled half-wavelength dipoles is derived in this paper. We derive Zopt for an ergodic capacity upper bound including the mutual coupling and matching networks effect. We show that the closed-form of Zopt in the high SNR regime is identical to the input impedance. The analytical results are validated by numerical simulations.

U2 - 10.1109/GLOCOM.2007.857

DO - 10.1109/GLOCOM.2007.857

M3 - Conference contribution

SP - 4511

EP - 4515

BT - Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE

ER -

Optimal Single-Port Impedance Matching for Compact MIMO Arrays

Abstract / Description of output

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Projects

Terminal array processing for cellular systems incorporating ad hoc networking techniques

Cite this