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On the Sum Rate of MIMO Nakagami-m Fading Channels with Linear Receivers

C. J. Zhong ; Michail Matthaiou (Institutionen för signaler och system, Signalbehandling) ; A. P. Huang ; Z. Y. Zhang
IEEE Transactions on Wireless Communications (1536-1276). Vol. 11 (2012), 10, p. 3651-3659.
[Artikel, refereegranskad vetenskaplig]

We investigate the ergodic sum rate of multiple-input multiple-output Nakagami-m fading channels with linear receivers. In particular, both mean square error and zero-forcing receivers are considered. For dual transmit antenna configurations, we present new, closed-form upper bounds on the ergodic sum rate of both receivers. Moreover, we derive exact expressions for the two key parameters dictating the sum rate behavior in the low signal to noise ratio regime, namely the minimum energy per information bit to reliably convey any positive rate and the wideband slope. By doing so, we are able to explicitly demonstrate the sub-optimality of linear receivers compared to optimal receivers, and draw useful insights into the impact of model parameters (e.g., number of antennas, fading parameters).

Nyckelord: Linear receivers, MIMO systems, Nakagami-m fading, sum rate, capacity bounds, systems, keyhole, regime



Denna post skapades 2012-12-12.
CPL Pubid: 167578

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Signalbehandling

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur