Generic Ergodic Capacity Bounds for Fixed-Gain AF Dual-Hop Relaying Systems
Artikel i vetenskaplig tidskrift, 2011
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.
Amplify-and-forward (AF) relaying
diversity
model
performance analysis
fading channels
capacity
cooperative
ergodic
wireless networks
transmissions
generalized fading channels
radio propagation
dual-hop transmission
Författare
C. J. Zhong
Zhejiang University
Michail Matthaiou
Chalmers, Signaler och system, Signalbehandling och medicinsk teknik
G. K. Karagiannidis
Aristotelio Panepistimio Thessalonikis
T. Ratnarajah
Queen's University Belfast
IEEE Transactions on Vehicular Technology
0018-9545 (ISSN) 1939-9359 (eISSN)
Vol. 60 8 3814-3824 6015565Ämneskategorier
Elektroteknik och elektronik
DOI
10.1109/tvt.2011.2167362