Feasibility of SINR guarantees for downlink transmissions in relay-enabled OFDMA networks

Authors:
Vishwesh V. Kulkarni;Joo Ghee Lim;Sanjay K. Jha
Affiliations:
Department of Electrical Engineering, University of Minnesota, Minneapolis, MN 55455, United States;School of Electrical and Electronic Engineering, Singapore Polytechnic, Singapore 139651, Singapore;School of Computer Science and Engineering, University of New South Wales, Sydney, NSW 2033, Australia
Venue:
Automatica (Journal of IFAC)
Year:
2012

Citing 16
Cited 0

Topics in matrix analysis

Topics in matrix analysis
On exploiting diversity and spatial reuse in relay-enabled wireless networks

Proceedings of the 9th ACM international symposium on Mobile ad hoc networking and computing
Power control for multicell CDMA wireless networks: a team optimization approach

Wireless Networks
On relay node placement and assignment for two-tiered wireless networks

Mobile Networks and Applications
Power Control in Wireless Cellular Networks

Foundations and Trends® in Networking
Two-Hop Subchannel Scheduling and Power Allocation for Fairness in OFDMA Relay Networks

ICWMC '09 Proceedings of the 2009 Fifth International Conference on Wireless and Mobile Communications
Optimal Relay Station Placement in Broadband Wireless Access Networks

IEEE Transactions on Mobile Computing
Relay technologies for WiMAX and LTE-advanced mobile systems

IEEE Communications Magazine
Joint allocation of power and subcarriers for OFDMA relay network

WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Low complexity resource allocation algorithm for IEEE 802.16 OFDMA system

ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Joint optimization of placement and bandwidth reservation for relays in IEEE 802.16j mobile multihop networks

ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Resource allocation in multi-cell OFDMA-based relay networks

INFOCOM'10 Proceedings of the 29th conference on Information communications
An Overview of Radio Resource Management in Relay-Enhanced OFDMA-Based Networks

IEEE Communications Surveys & Tutorials
IEEE 802.16J relay-based wireless access networks: an overview

IEEE Wireless Communications
Computationally efficient bandwidth allocation and power control for OFDMA

IEEE Transactions on Wireless Communications
Wireless relays for broadband access [radio communications series]

IEEE Communications Magazine

Quantified Score

Hi-index	22.14

Visualization

Abstract

We examine the feasibility of the signal-to-interference-and-noise-ratio (SINR) guarantees for downlink transmissions in relay-enhanced OFDMA networks that feature stationary users. The constraints are as follows: (i) the SINR of every user exceeds a certain threshold and (ii) the transmit power for each transmission is less than a certain threshold. We first derive a set of necessary and sufficient feasibility conditions for the specific case in which a user i served by the relay station shares at most one subchannel with a user j served by the base station. These conditions are a function of the target SINR values and the channel gains, and derived using a property of an M-matrix. If the geographical positions of the base station, the relay station, and the users are fixed, then our result determines the feasible SINR values for the users. Conversely, if these entities are not geographically fixed but the target SINR values are fixed, our result determines the geographical locations for these entities that ensure that the target SINR values are realized. We then extend these results to the case of networks featuring multiple base stations and multiple relays. Our conditions for checking the feasibility can be easily implemented in practice.