NDLI: Feedback-Topology Designs for Interference Alignment in MIMO Interference Channels

Content Provider	IEEE Xplore Digital Library
Author	Sungyoon Cho Kaibin Huang Dong Ku Kim Lau, V.K.N. Hyukjin Chae Hanbyul Seo Byoung-Hoon Kim
Copyright Year	1991
Abstract	Interference alignment (IA) is a joint-transmission technique for the interference channel that achieves the maximum degrees-of-freedom and provides linear scaling of the capacity with the number of users for high signal-to-noise ratios (SNRs). Most prior work on IA is based on the impractical assumption that perfect and global channel-state information (CSI) is available at all transmitters. However, to implement IA, each receiver has to feed back CSI to all interferers, resulting in overwhelming feedback overhead. In particular, the sum feedback rate of each receiver scales quadratically with the number of users even if the feedback CSI is quantized. To substantially suppress feedback overhead, this paper focuses on designing efficient arrangements of feedback links, called feedback topologies, under the IA constraint. For the multiple-input multiple-output (MIMO) K-user interference channel, we propose the feedback topology that supports sequential CSI exchange (feedback and feedforward) between transmitters and receivers so as to achieve IA progressively. This feedback topology is shown to reduce the network feedback overhead from a quadratic function of K to a linear one. To reduce the delay in the sequential CSI exchange, an alternative feedback topology is designed for supporting two-hop feedback via a control station, which also achieves the linear feedback scaling with K. Next, given the proposed feedback topologies, the feedback-bit allocation algorithm is designed for allocating feedback bits by each receiver to different feedback links so as to regulate the residual interference caused by finite-rate feedback. Simulation results demonstrate that the proposed bit allocation leads to significant throughput gains especially in strong interference environments.
Sponsorship	IEEE Signal Processing Society
Starting Page	6561
Ending Page	6575
Page Count	15
File Size	3491401
File Format	PDF
ISSN	1053587X
Volume Number	60
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Topology MIMO Transmitters Interference channels Network topology multiple-input multiple-output (MIMO) Cooperative systems feedback communications interference cancellation interference channels
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Cooperative Algorithms for MIMO Interference Channels

Topology Control for Effective Interference Cancellation in Multiuser MIMO Networks

User Selection in MIMO Interfering Broadcast Channels

MIMO Interference Alignment in Random Access Networks

Transmission Mode Selection Algorithms for Spatially Correlated MIMO Interference Channels

Probabilistic Limited Feedback Precoding in MIMO Interference Channels

Grassmannian Differential Limited Feedback for Interference Alignment

Sum-Rate Maximization in Distributed-Antenna Heterogeneous MIMO Downlinks: Application to Measured Channels

MIMO Interference Alignment Over Correlated Channels With Imperfect CSI

Feedback-Topology Designs for Interference Alignment in MIMO Interference Channels

Similar Documents

Cooperative Algorithms for MIMO Interference Channels

Topology Control for Effective Interference Cancellation in Multiuser MIMO Networks

User Selection in MIMO Interfering Broadcast Channels

MIMO Interference Alignment in Random Access Networks

Transmission Mode Selection Algorithms for Spatially Correlated MIMO Interference Channels

Probabilistic Limited Feedback Precoding in MIMO Interference Channels

Grassmannian Differential Limited Feedback for Interference Alignment

Sum-Rate Maximization in Distributed-Antenna Heterogeneous MIMO Downlinks: Application to Measured Channels

MIMO Interference Alignment Over Correlated Channels With Imperfect CSI

Feedback-Topology Designs for Interference Alignment in MIMO Interference Channels