Capacity Outage Probability for Multi-Cell Processing Under Rayleigh Fading

Garcia, Virgile; Lebedev, N. I.; Gorce, Jean‐Marie

doi:10.1109/lcomm.2011.061011.102120

Cited by 22 publications

(18 citation statements)

References 7 publications

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“…The Rician fading channel towards the donor cell is based on the assumption that LPNs have LOS connection from their donor cells, which is mostly the intended scenario in practice. Previously, outage capacity analysis was carried out for CoMP systems in [23] while authors in [24] provide analysis on optimal power allocation. Distinction of our work is that analyses in both works consider Rayleigh fading channels for all base station transmissions.…”

Section: Paper Contribution and Structurementioning

confidence: 99%

“…Distinction of our work is that analyses in both works consider Rayleigh fading channels for all base station transmissions. Furthermore, [23] presents results for CoMP methods exploiting long-term channel feedback whereas [24] provides results for CoMP methods utilizing perfect channel feedback. We provide outage capacity analysis for 3rd Generation Partnership Project (3GPP) compliant CoMP method that exploits quantized short-term phase feedback.…”

Section: Paper Contribution and Structurementioning

confidence: 99%

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Coordinated multi-point transmission for relaxation of self-backhauling bottlenecks in heterogeneous networks

Haile

Mutafungwa

Hämäläinen

2015

J Wireless Com Network

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The heterogeneous deployment of high-power macro cells and low-power nodes (LPNs) is now widely acknowledged as an essential requirement towards meeting the continued demand for mobile data capacity. The selection of the optimum backhaul solution for the LPNs obliges operators to consider not only the capacity of the backhaul but also other key factors so as to fully leverage the benefits provided by LPNs: the cost of the backhauling may limit the density of LPN deployments and the backhaul configuration requirements impact on the flexibility of LPN deployment. To that end, self-backhauling of LPNs via the existing macro radio access network (RAN) provides an attractive solution, particularly for deployment scenarios that are very cost-sensitive and/or require high flexibility. However, use of self-backhauling usually makes backhaul as a bottleneck due to the a) limited bandwidth allocated for legacy macro RAN, b) the need to share resources with macro user equipment (UE), and c) the high-intercell interference particularly in the macro cell edge. In this paper, we provide an overview of self-backhauled LPNs and investigate possible performance enhancements through the use of coordinated multi-point (CoMP) transmission to relax the downlink backhaul capacity bottleneck for self-backhauled LPNs. To that end, we carry out analytical studies for a practical limited-feedback CoMP technique and numerically verify the derived capacity outage expressions. Furthermore, we implement a simulation study for an exemplary heterogeneous network deployment in a realistic radio propagation environment. The results of the studies demonstrate that significant spectral efficiency and throughput gains for the LPN backhaul are achievable through the use of selected CoMP technique under realizable feedback overhead, even under feedback bit error. The achieved relaxation in the backhaul bottleneck is observed providing improved performance for the UEs served by the LPNs. Furthermore, more resources will be available for macro UEs leading to overall performance gains compared to the case without CoMP.

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Section: Paper Contribution and Structurementioning

confidence: 99%

Section: Paper Contribution and Structurementioning

confidence: 99%

Coordinated multi-point transmission for relaxation of self-backhauling bottlenecks in heterogeneous networks

Haile

Mutafungwa

Hämäläinen

2015

J Wireless Com Network

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“…In [4][5][6][7], authors performed simulation, measurement or field study but no theoretical studies were conducted. In [8], an analytical expression of the capacity outage probability was derived for an open-loop Alamoutilike CoMP downlink transmission in Rayleigh fading. The proposed SINR expression can only be achieved when using a distributed Alamouti for two cooperating BSs.…”

Section: Introductionmentioning

confidence: 99%

Analytical Joint Processing Multi-Point Cooperation Performance in Rayleigh Fading

Cheikh

Kélif

Coupechoux

et al. 2012

IEEE Wireless Commun. Lett.

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Abstract-Coordinated multi-point (CoMP) is a very promising transmission scheme since it permits interference reduction and cell-edge throughput improvement. In this work, we study the performance of the joint processing multiple antenna multipoint cooperation using the maximum ratio transmission (MRT) technique. A closed form expression of the outage probability is derived for Rayleigh flat fading channel model considering pathloss and constant shadowing. Analytical and simulation results are compared.

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“…This criterion may be used at mobile (or at its primary BS) to determine whether it requires other BS to cooperate. 3) A model that accounts for uncertainty due to fading, through our recent result on capacity outage distribution in CoMP with Rayleigh fading [11].…”

Section: Introductionmentioning

confidence: 99%

“…The proposed BS association procedure is presented. The distribution of the capacity under Rayleigh fading [11] is also derived to evaluate the resulting users' goodputs. In Section III, the resource allocation algorithm is provided, together with the fairness measure.…”

Section: Introductionmentioning

confidence: 99%

Capacity-Fairness Trade-Off Using Coordinated Multi-Cell Processing

Garcia

Lebedev

Gorce

2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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Abstract-Multi-cell processing, also called Coordinated Multiple Point (CoMP), is a promising distributed technique that uses neighbour cells' antennas. It is expected to be the part of next generation cellular standards such as LTE-A. Small cell networks in dense urban environments are limited by interferences and CoMP can strongly take advantage of this fact to improve cell-edge users' throughput. The present study introduces a distributed criterion for mobiles to select their optimal set of Base Stations (BS) to perform CoMP, and evaluates the impact of this association on the fairness and the total cell throughput. For that, we use a known theoretical expression for the capacity outage probability of CoMP under Rayleigh fading and evaluate the goodputs of antennas associations. The proposed criterion is used in combination with α-fair resource allocation to perform a joint double-objective optimization of fairness and efficiency.

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Capacity Outage Probability for Multi-Cell Processing Under Rayleigh Fading

Cited by 22 publications

References 7 publications

Coordinated multi-point transmission for relaxation of self-backhauling bottlenecks in heterogeneous networks

Coordinated multi-point transmission for relaxation of self-backhauling bottlenecks in heterogeneous networks

Analytical Joint Processing Multi-Point Cooperation Performance in Rayleigh Fading

Capacity-Fairness Trade-Off Using Coordinated Multi-Cell Processing

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