3 research outputs found
Asymptotic Analysis of Amplify and Forward Relaying in a Parallel MIMO Relay Network
This paper considers the setup of a parallel MIMO relay network in which
relays, each equipped with antennas, assist the transmitter and the
receiver, each equipped with antennas, in the half-duplex mode, under the
assumption that . This setup has been studied in the literature like
in \cite{nabar}, \cite{nabar2}, and \cite{qr}. In this paper, a simple scheme,
the so-called Incremental Cooperative Beamforming, is introduced and shown to
achieve the capacity of the network in the asymptotic case of
with a gap no more than . This result is shown to hold,
as long as the power of the relays scales as .
Finally, the asymptotic SNR behavior is studied and it is proved that the
proposed scheme achieves the full multiplexing gain, regardless of the number
of relays