Capacity-approaching rate function for layered multiantenna architectures


Autoria(s): Lozano Solsona, Àngel
Contribuinte(s)

Universitat Pompeu Fabra

Data(s)

02/07/2013

Resumo

The simultaneous use of multiple transmit and receive antennas can unleash very large capacity increases in rich multipath environments. Although such capacities can be approached by layered multi-antenna architectures with per-antenna rate control, the need for short-term feedback arises as a potential impediment, in particular as the number of antennas—and thus the number of rates to be controlled—increases. What we show, however, is that the need for short-term feedback in fact vanishes as the number of antennas and/or the diversity order increases. Specifically, the rate supported by each transmit antenna becomes deterministic and a sole function of the signal-to-noise, the ratio of transmit and receive antennas, and the decoding order, all of which are either fixed or slowly varying. More generally, we illustrate -through this specific derivation— the relevance of some established random CDMA results to the single-user multi-antenna problem.

Identificador

http://hdl.handle.net/10230/16143

Idioma(s)

eng

Publicador

Institute of Electrical and Electronics Engineers (IEEE)

Direitos

info:eu-repo/semantics/openAccess

© 2003 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.The final published article can be found at <a href="http://dx.doi.org/10.1109/TWC.2003.814330">http://dx.doi.org/10.1109/TWC.2003.814330</a>

Palavras-Chave #Ràdio -- Antenes #Comunicació sense fil, Sistemes de #Ràdio -- Interferències #Channel capacity #Fading channels #Multiple-Antenna information theory #Multiuser detection #Antenna diversity #Adaptive arrays
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/acceptedVersion