# Interference Channels With Coordinated Multipoint Transmission: Degrees of Freedom, Message Assignment, and Fractional Reuse

@article{Gamal2014InterferenceCW, title={Interference Channels With Coordinated Multipoint Transmission: Degrees of Freedom, Message Assignment, and Fractional Reuse}, author={A. E. Gamal and V. Annapureddy and V. Veeravalli}, journal={IEEE Transactions on Information Theory}, year={2014}, volume={60}, pages={3483-3498} }

Coordinated multipoint (CoMP) transmission is an infrastructural enhancement under consideration for next generation wireless networks. In this paper, the capacity gain achieved through CoMP transmission is studied in various models of wireless networks that have practical significance. The capacity gain is analyzed through the degrees of freedom (DoF) criterion. The DoF available for communication provides an analytically tractable way to characterize the capacity of interference channels. The… Expand

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It is established that by allowing for cooperative transmission and a flexible message assignment that is constrained only by an average backhaul load, one can deliver the rate gains promised by information-theoretic upper bounds with practical one-shot schemes that incur little or no additional load on the backhaul. Expand

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An extension of the presented coding scheme for the case where B = 1 is shown to apply for more general locally connected and two-dimensional networks to show that the optimal assignment of messages to transmitters is asymmetric and satisfies a local cooperation constraint. Expand

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This work extends the conclusion shown in previous work that linear cooperation schemes do not increase the puDoF value to the case where L = 2, by proving optimality of TDMA in this case as well. Expand

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#### References

SHOWING 1-10 OF 56 REFERENCES

Degrees of freedom (DoF) of locally connected interference channels with coordinated multi-point (CoMP) transmission

- Computer Science, Mathematics
- 2012 IEEE International Conference on Communications (ICC)
- 2012

The relaxation of the cooperation constraint, while maintaining the same load imposed on a backhaul link needed to distribute the messages, results in a gain in the DoF and the asymptotic limit of the per user DoF under the cooperation order constraint is 2M/2M+1. Expand

On optimal message assignments for interference channels with CoMP transmission

- Computer Science, Mathematics
- 2012 46th Annual Conference on Information Sciences and Systems (CISS)
- 2012

This work relaxes the cooperation constraint such that each message can be assigned to M transmitters without imposing further constraints on their location and studies properties for different message assignments in terms of the gain in the per user DoF number over that achieved without cooperation. Expand

Degrees of freedom (DoF) of locally connected interference channels with cooperating multiple-antenna transmitters

- Mathematics, Computer Science
- 2012 IEEE International Symposium on Information Theory Proceedings
- 2012

This work shows that a simple linear strategy employing zero forcing transmit beams achieves min {2MN/M(N+1)+L, 1} per user degrees of freedom, and generalizes the upper bound proved for Wyner's asymmetric channel model. Expand

Degrees of Freedom Region of the MIMO $X$ Channel

- Mathematics, Computer Science
- IEEE Transactions on Information Theory
- 2008

We provide achievability as well as converse results for the degrees of freedom region of a multiple-input multiple-output (MIMO) X channel, i.e., a system with two transmitters, two receivers, each… Expand

Interference Mitigation Through Limited Transmitter Cooperation

- Computer Science, Mathematics
- IEEE Transactions on Information Theory
- 2011

It is shown that in the interference-limited regime, the behavior of the benefit brought by transmitter cooperation is the same as that by receiver cooperation, and the bounded-gap-to-optimality result shows that there is an interesting reciprocity between the scenario with conferencing transmitters and the scenario without transmitters. Expand

Cooperative Interference Management With MISO Beamforming

- Computer Science, Mathematics
- IEEE Transactions on Signal Processing
- 2010

It is shown that each Pareto-boundary rate-tuple of the MISO-IC can be achieved in a decentralized manner when each of the BSs attains its own channel capacity subject to a certain set of interference-power constraints at the other MS receivers. Expand

A cognitive network with clustered decoding

- Computer Science
- 2009 IEEE International Symposium on Information Theory
- 2009

The uplink of a linear cellular model featuring short range inter-cell interference, a K-transmitter/K-receiver interference network where the signal transmitted by a given transmitter is interfered by the signal sent by the transmitter to its left, is studied. Expand

Communication Over MIMO X Channels: Interference Alignment, Decomposition, and Performance Analysis

- Mathematics, Computer Science
- IEEE Transactions on Information Theory
- 2008

It is shown that by using mixed design schemes, rather than decomposition schemes, and taking the statistical properties of the interference terms into account, the power offset of the system can be improved. Expand

Approximate Sum-Capacity of K-user Cognitive Interference Channels with Cumulative Message Sharing

- Computer Science, Mathematics
- IEEE Journal on Selected Areas in Communications
- 2014

This paper considers the K-user cognitive interference channel with one primary and K-1 secondary/cognitive transmitters with a cumulative message sharing structure, i.e., cognitive transmitter i ϵ… Expand

The Multiplexing Gain of MIMO X-Channels with Partial Transmit Side-Information

- Computer Science, Mathematics
- 2007 IEEE International Symposium on Information Theory
- 2007

It is proved that, in terms of sum-rate scaling at high SNR, partial side-information at one of the transmitters and full side- information at both transmitters are equivalent in the MIMO X-channel. Expand