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Generic Ergodic Capacity Bounds for Fixed-Gain AF Dual-Hop Relaying Systems

C. J. Zhong ; Michail Matthaiou (Institutionen för signaler och system, Signalbehandling) ; G. K. Karagiannidis ; T. Ratnarajah
IEEE Transactions on Vehicular Technology (0018-9545). Vol. 60 (2011), 8, p. 3814-3824.
[Artikel, refereegranskad vetenskaplig]

This paper elaborates on the ergodic capacity of fixed-gain amplify-and-forward (AF) dual-hop systems, which have recently attracted considerable research and industry interest. In particular, two novel capacity bounds that allow for fast and efficient computation and apply for nonidentically distributed hops are derived. More importantly, they are generic since they apply to a wide range of popular fading channel models. Specifically, the proposed upper bound applies to Nakagami-m, Weibull, and generalized-K fading channels, whereas the proposed lower bound is more general and applies to Rician fading channels. Moreover, it is explicitly demonstrated that the proposed lower and upper bounds become asymptotically exact in the high signal-to-noise ratio (SNR) regime. Based on our analytical expressions and numerical results, we gain valuable insights into the impact of model parameters on the capacity of fixed-gain AF dual-hop relaying systems.

Nyckelord: Amplify-and-forward (AF) relaying, dual-hop transmission, ergodic, capacity, fading channels, generalized fading channels, performance analysis, cooperative, diversity, wireless networks, radio propagation, transmissions, model



Denna post skapades 2011-11-30.
CPL Pubid: 149306

 

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Institutioner (Chalmers)

Institutionen för signaler och system, Signalbehandling

Ämnesområden

Elektroteknik och elektronik

Chalmers infrastruktur