Optimal Joint Base Station Assignment and Beamforming for Heterogeneous Networks

Consider a downlink MIMO heterogeneous wireless network with multiple cells, each containing many mobile users and a number of base stations with varying capabilities. A central task in the management of such a network is to assign each user to a base station and design a linear transmit strategy to...

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Bibliographic Details
Published in:IEEE transactions on signal processing Vol. 62; no. 8; pp. 1950 - 1961
Main Authors: Sanjabi, Maziar, Razaviyayn, Meisam, Zhi-Quan Luo
Format: Journal Article
Language:English
Published: New York, NY IEEE 15.04.2014
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Algorithms
Applied sciences
Array signal processing
Base station assignment
Base stations
Complexity theory
Design engineering
Detection, estimation, filtering, equalization, prediction
Exact sciences and technology
heterogeneous networks
Information, signal and communications theory
Interference
Joints
Mathematical analysis
Mathematical models
Networks
NP-harness
Optimization
precoder optimization
resource management
Signal and communications theory
Signal, noise
Stations
Telecommunications and information theory
Transmitters
Utilities
Wireless networks
Performance evaluation
MIMO system
heterogeneous networks
precoder optimization
NP-harness
Coding circuit
Utility function
Base station
Wireless telecommunication
Information rate
Equity
Downlink
Base station assignment
Algorithm
Information transmission
Beam forming
Optimization
Transceiver
Algorithm performance
NP hard problem
Signal processing
Wireless network
Resource management
ISSN:1053-587X, 1941-0476
Online Access:Get full text
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Description
Summary:Consider a downlink MIMO heterogeneous wireless network with multiple cells, each containing many mobile users and a number of base stations with varying capabilities. A central task in the management of such a network is to assign each user to a base station and design a linear transmit strategy to ensure a satisfactory level of network performance. In this work, we propose a formulation for the joint base station assignment and linear transceiver design problem based on the maximization of a system wide utility. We first establish the NP-hardness of the resulting optimization problem for a large family of α-fairness utility functions. Then, we propose an efficient algorithm to approximately solve this problem for a variety of different utility functions. Our numerical experiments show that the proposed algorithm can achieve significantly higher levels of system throughput and user fairness than what is possible by optimizing the precoders alone.
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ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2014.2303946