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Tight bounds on the ergodic capacity of cooperative analog relaying with adaptive source transmission techniques

Tight bounds on the ergodic capacity of cooperative analog relaying with adaptive source transmission techniques,10.1109/PIMRC.2010.5671614,Annamalai

Tight bounds on the ergodic capacity of cooperative analog relaying with adaptive source transmission techniques   (Citations: 6)
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Tight bounds for the Shannon capacity of amplify-and-forward cooperative diversity networks are derived for three different adaptive source transmission policies in a myriad of fading environments: (i) constant power with optimal rate adaptation (ORA); (ii) optimal joint power and rate adaptation (OPRA); and (iii) fixed rate with truncated channel inversion (TCIFR). Our unified framework based on the moment-generating function (MGF) approach allows us to gain insights as to how fade distributions and dissimilar fading statistics across the distinct communication links will affect the Shannon capacity, without imposing any restrictions on the fading parameters.
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    • ...In [2] and [8]-[11], the authors have developed bounds for the MGF of end-to-end SNR of CAF in Rayleigh [2][8], Nakagami-m [9]-[10] and Rice [11] fading environments (i.e., Case III)...
    • ...developed to overcome the analytical difficulty of finding the desired PDF with independent but non-identically distributed wireless links in Nakagami-m [9][10] and Rice [11] channels or to simplify analysis in Rayleigh fading [2][8]...
    • ...The cumulative distribution function (CDF) of 1 γ has been shown in [10] to be upper-bounded by the CDF of...

    A. Annamalaiet al. Accurate approximations for the symbol error probability of cooperativ...

    • ...Bounds for the ergodic capacity of an amplify-and-forward link-adaptive cooperative relay network with limited side information (i.e., only feedback of the effective SNR at destination node is required to be available at the source node while the relays simply amplify and forward the signals) were derived in [3]- [5] for different stochastic channel models...
    • ...Readers are referred to Fig. 1 in [5]-[6] for the system model where the source node S communicates with destination node D via direct-link and through T amplify-and-forward relays, Ri, , {1, 2,...., } in two transmission phases...
    • ...i γγ γ . Readers are referred to [5] for the...
    • ...from its MGF using a multi-precision Laplace inversion (fixed-Talbot) method [5]-[6]...
    • ...To arrive at (2), we have utilized the “exponential-type” integral representation for the logarithm function (details are given in Appendix A of [5])...
    • ...<{[SECTION]}>where ˆ (.) Fγ may be computed via the fixed-Talbot method [5]...
    • ...exploited the results in Appendix B of [5]...

    A. Annamalaiet al. Analysis of amplify-and-forward cooperative relaying with adaptive mod...

    • ...This article builds on our recent accomplishments in [5]-[6] with an emphasis on understanding the impact power allocation on the ergodic capacity of cooperative relay networks in a generalized fading channel...
    • ...For brevity, readers are referred to Fig. 1 in [5]-[6] for the system model where the source node S communicates with destination node D via direct-link and through N amplify-andforward relays, Ri, iN ∈ , {1, 2,...., } in two transmission phases...
    • ...i γγ γ . Readers are referred to [6] for the...

    A. Annamalaiet al. On the ergodic capacity of cooperative analog relaying with source ada...

    • ...Bounds for the ergodic capacity of cooperative amplify-and-forward (CAF) relay networks with limited CSI (i.e., only feedback of the total received SNR at destination node is required at the source node for adapting its rate and/or power level to the prevailing channel condition while the cooperating relays simply amplify and forward their received signals to the destination node) were derived in [1], [7] and [8] for three distinct ...
    • ...For brevity, readers are referred to Fig.1 of [2] or [8] for the system model under consideration...

    A. Annamalaiet al. Analysis of cooperative non-regenerative relay networks with adaptive ...

    • ...[7], [8] derived bounds for the Shannon capacity of link adaptive CAF relay networks with limited CSI, in which the rate and/or power level at the source node is adapted according to changing channel condition...
    • ...For brevity, readers are referred to Fig.1 of [8] for the system model under consideration...
    • ...Utilizing the “exponential type” integral representation of logarithm function (e.g., Appendix A of [8]), we may efficiently compute normalized mean achievable spectral efficiency as...

    Bhuvan Modiet al. Improving the Spectral Efficiency of Amplify-and-Forward Cooperative R...

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