Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels

Seok Hwan Park; Lee Inkyu

doi:10.1109/ICC.2009.5198887

Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels

Seok Hwan Park, Lee Inkyu

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

20 Citations (Scopus)

Abstract

In this paper, we derive a precise expression of spatial degrees of freedom (DOF) for two mutually interfering broadcast channels (IFBC) as a function of arbitrary numbers of transmit antennas and users. The lower bound on the DOF is obtained by showing that the zero-forcing solution suffices to achieve all the DOF. Also, the upper bound which coincides with the lower bound is shown using Jafar's earlier work. From the derived result, we observe that disabling receive cooperation of the MIMO interference channel causes the DOF loss. Additionally, we propose a linear precoding scheme for the IFBC by extending one designed for broadcast channels with an aim of maximizing the sum rate performance. We utilize the fact that the precoding matrices in stationary point always satisfy the zero-gradient condition. Our result is confirmed through numerical simulations on the sum rate performance of the proposed precoding technique.

Original language	English
Title of host publication	Proceedings - 2009 IEEE International Conference on Communications, ICC 2009
DOIs	https://doi.org/10.1109/ICC.2009.5198887
Publication status	Published - 2009 Nov 19
Event	2009 IEEE International Conference on Communications, ICC 2009 - Dresden, Germany Duration: 2009 Jun 14 → 2009 Jun 18

Publication series

Name	IEEE International Conference on Communications
ISSN (Print)	0536-1486

Other

Other	2009 IEEE International Conference on Communications, ICC 2009
Country	Germany
City	Dresden
Period	09/6/14 → 09/6/18

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1109/ICC.2009.5198887

Fingerprint Dive into the research topics of 'Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels'. Together they form a unique fingerprint.

Cite this

Park, S. H., & Inkyu, L. (2009). Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels. In Proceedings - 2009 IEEE International Conference on Communications, ICC 2009 [5198887] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2009.5198887

Park, SH & Inkyu, L 2009, Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels. in Proceedings - 2009 IEEE International Conference on Communications, ICC 2009., 5198887, IEEE International Conference on Communications, 2009 IEEE International Conference on Communications, ICC 2009, Dresden, Germany, 09/6/14. https://doi.org/10.1109/ICC.2009.5198887

@inproceedings{e1b3b6dee1594beea0b3f13b1a98f387,

title = "Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels",

abstract = "In this paper, we derive a precise expression of spatial degrees of freedom (DOF) for two mutually interfering broadcast channels (IFBC) as a function of arbitrary numbers of transmit antennas and users. The lower bound on the DOF is obtained by showing that the zero-forcing solution suffices to achieve all the DOF. Also, the upper bound which coincides with the lower bound is shown using Jafar's earlier work. From the derived result, we observe that disabling receive cooperation of the MIMO interference channel causes the DOF loss. Additionally, we propose a linear precoding scheme for the IFBC by extending one designed for broadcast channels with an aim of maximizing the sum rate performance. We utilize the fact that the precoding matrices in stationary point always satisfy the zero-gradient condition. Our result is confirmed through numerical simulations on the sum rate performance of the proposed precoding technique.",

author = "Park, {Seok Hwan} and Lee Inkyu",

year = "2009",

month = nov,

day = "19",

doi = "10.1109/ICC.2009.5198887",

language = "English",

isbn = "9781424434350",

series = "IEEE International Conference on Communications",

booktitle = "Proceedings - 2009 IEEE International Conference on Communications, ICC 2009",

note = "2009 IEEE International Conference on Communications, ICC 2009 ; Conference date: 14-06-2009 Through 18-06-2009",

}

TY - GEN

T1 - Degrees of freedom and sum rate maximization for two mutually interfering broadcast channels

AU - Park, Seok Hwan

AU - Inkyu, Lee

PY - 2009/11/19

Y1 - 2009/11/19

N2 - In this paper, we derive a precise expression of spatial degrees of freedom (DOF) for two mutually interfering broadcast channels (IFBC) as a function of arbitrary numbers of transmit antennas and users. The lower bound on the DOF is obtained by showing that the zero-forcing solution suffices to achieve all the DOF. Also, the upper bound which coincides with the lower bound is shown using Jafar's earlier work. From the derived result, we observe that disabling receive cooperation of the MIMO interference channel causes the DOF loss. Additionally, we propose a linear precoding scheme for the IFBC by extending one designed for broadcast channels with an aim of maximizing the sum rate performance. We utilize the fact that the precoding matrices in stationary point always satisfy the zero-gradient condition. Our result is confirmed through numerical simulations on the sum rate performance of the proposed precoding technique.

AB - In this paper, we derive a precise expression of spatial degrees of freedom (DOF) for two mutually interfering broadcast channels (IFBC) as a function of arbitrary numbers of transmit antennas and users. The lower bound on the DOF is obtained by showing that the zero-forcing solution suffices to achieve all the DOF. Also, the upper bound which coincides with the lower bound is shown using Jafar's earlier work. From the derived result, we observe that disabling receive cooperation of the MIMO interference channel causes the DOF loss. Additionally, we propose a linear precoding scheme for the IFBC by extending one designed for broadcast channels with an aim of maximizing the sum rate performance. We utilize the fact that the precoding matrices in stationary point always satisfy the zero-gradient condition. Our result is confirmed through numerical simulations on the sum rate performance of the proposed precoding technique.

UR - http://www.scopus.com/inward/record.url?scp=70449469924&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70449469924&partnerID=8YFLogxK

U2 - 10.1109/ICC.2009.5198887

DO - 10.1109/ICC.2009.5198887

M3 - Conference contribution

AN - SCOPUS:70449469924

SN - 9781424434350

T3 - IEEE International Conference on Communications

BT - Proceedings - 2009 IEEE International Conference on Communications, ICC 2009

T2 - 2009 IEEE International Conference on Communications, ICC 2009

Y2 - 14 June 2009 through 18 June 2009

ER -