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Optimal single-port matching impedance for capacity maximization in compact MIMO arrays

In English

Författare

Summary, in English

A complete MIMO system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 × 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system performance. Experimental data for monopoles is also presented to further confirm our numerical findings and validate the accuracy of our derivation.

Publiceringsår

2008

Språk

Engelska

Sidor

3566-3575

Publikation/Tidskrift/Serie

IEEE Transactions on Antennas and Propagation

Volym

56

Issue

11

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Status

Published

Projekt

  • Radiosystem: MIMO technology in compact multiband antenna systems (Vinnova/SonyEricsson, BKL)
  • Radiosystem: NEWCOM (EU, JBA)

Forskningsgrupp

  • Radio Systems
  • Electromagnetic theory

ISBN/ISSN/Övrigt

  • ISSN: 0018-926X