Estimating ergodic capacity of cooperative analog relaying under different adaptive source transmission techniques

Annamalai, A.; Palat, R.C.; Matyjas, John D.

doi:10.1109/sarnof.2010.5469789

Cited by 46 publications

(40 citation statements)

References 9 publications

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“…In the case of the relay link, the dominant terms for (40) and for the asymptotic expressions derived ahead are dominated by the summation of two terms. The first term corresponds to min( that is the (u + v) th term in κ 8 .…”

Section: ) Cumulative Distribution Function (Cdf)mentioning

confidence: 99%

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On the Performance of Free-Space Optical Communication Systems Over Double Generalized Gamma Channel

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2015

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Section: ) Cumulative Distribution Function (Cdf)mentioning

confidence: 99%

“…3) Ergodic Capacity: The ergodic capacity in (29) can be expressed in terms of the complementary CDF [40,Eq. (15)…”

Section: ) Outage Probability (Op)mentioning

confidence: 99%

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On the Performance of Free-Space Optical Communication Systems Over Double Generalized Gamma Channel

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IEEE J. Select. Areas Commun.

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“…The channel capacity when CSI (channel state information) is available only at the receiver [5] is given as-…”

Section: Optimal Rate Adaptation With Fixed Transmit Power (Ora) Algomentioning

confidence: 99%

A Survey on Rate Adaptation Algorithms for Effective Resource Utilization in LTE Advanced

Duggal¹,

Malhotra

2015

IJFGCN

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“…In [6], the author investigated the adaptive transmission for a two-hop (regenerative and nonregenerative) relay network (but without the direct sourcedestination link) in Rayleigh fading. [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. The performance of CAF with constant power M-QAM adaptive rate transmission when the ABER in Rayleigh fading is constrained to be below a specified target bit error rate (BER) is examined in [2] and [3] for fixed and optimum mode switching thresholds, respectively.…”

Section: Motivationmentioning

confidence: 99%

Improving the Spectral Efficiency of Amplify-and-Forward Cooperative Relay Network with Adaptive M-QAM Modulation

Modi

Annamalai

2011

2011 Proceedings of 20th International Conference on Computer Communications and Networks (ICCCN)

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This paper investigates the performance of cooperative amplify-and-forward (CAF) relay networks with adaptive M-ary quadrature amplitude modulation (M-QAM) technique in Nakagami-m and Rice wireless fading environments. We derived closed form upper bound expression for the marginal MGF of end-to-end SNR of CAF relay system in Nakagami-m fading to compute average bit error rate (ABER), mean achievable spectral efficiency, and outage probability performance metrics. Additionally, along with the above bounding techniques, we have adopted an accurate approximate MGF of end-to-end SNR of CAF relay system to compute above mentioned performance metrics. Employing the above novel approach based on "approximate MGF" allows us to simplify the computation complexity of achievable spectral efficiency as well as ABER of CAF relay system in generalized fading environments by simply replacing appropriate single channel MGF as readily available. The accuracies of our analytical results have been validated via Monte Carlo simulations.Index Terms -----cooperative communications, wireless link adaptation, adaptive M-QAM modulation. I. MOTIVATIONThe demand for wireless communication system in recent years has necessitated a need to improve the performance, reliability and data rate of wireless channels. To address these needs, several attempts have been made on each of these improvement areas. The broadcast nature of wireless transmissions has enabled a new communication paradigm known as "cooperative communication" where the source node communicates with a destination node with the help of one or more relay nodes to harness the new form of spatial diversity and combat multipath fading. This introduced additional reliability improvements. Adaptive transmission is yet another powerful wireless communication technique for improving the spectral efficiency wherein the signal constellation size, power level and/or coding rate are "matched" to the prevailing channel conditions based on the acquired channel-side-information (CSI) on the feedback channel. Although there have been extensive prior work on performance analyses of non-adaptive (i.e., fixed-rate or fixed-power) cooperative diversity systems and also on adaptive transmission techniques for traditional (noncooperative) wireless networks, the art of adaptive link layer in cooperative wireless networks is still in its infancy [1]- [3]. But theoretical studies of such systems would be of interest to several emerging IEEE 802 standards such as 802.11s and 802.16j that are considering the use of cooperative techniques in their multi-hop relay architecture for enhancing coverage, throughput, and network capacity.In this paragraph a brief review of prior research on cooperative diversity with adaptive transmission is discussed. The problem of optimal power allocation in wireless relay networks was investigated in [4]-[5], but source rateadaptation was not considered. In [6], the author investigated the adaptive transmission for a two-hop (regenerative and nonregenerative) relay network (...

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Estimating ergodic capacity of cooperative analog relaying under different adaptive source transmission techniques

Cited by 46 publications

References 9 publications

On the Performance of Free-Space Optical Communication Systems Over Double Generalized Gamma Channel

On the Performance of Free-Space Optical Communication Systems Over Double Generalized Gamma Channel

A Survey on Rate Adaptation Algorithms for Effective Resource Utilization in LTE Advanced

Improving the Spectral Efficiency of Amplify-and-Forward Cooperative Relay Network with Adaptive M-QAM Modulation

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