Chunk-based User Selection and Resource Allocation in Distributed Secure MISOOFDMA Systems

DOI

10.2991/iccasm.2012.206How to use a DOI?

Keywords

User selection, distributed antenna system, MISOOFDMA, chunks, physical-layer security, artificial noise

Abstract

The user selection and resource allocation problem for the downlink of Orthogonal Frequency Division Multiple Access (OFDMA) wireless systems is investigated. It is assumed that the Base Station (BS) consists of multiple antennas in a distributed Antenna System (DAS), while a single antenna is available to each user. The considered problem is modeled as an optimization problem which takes into account a multiple antenna eavesdropper and artificial noise generation for secure communications. Also, the user selection unit is not the subcarrier, as in conventional OFDMA systems, but a set of subcarriers (chunk). User selection based on chunk, power, secrecy data rate are optimized for security capacity in the proposed suboptimal but efficient algorithm. Simulation and complexity comparison are provided to show the benefits of chunk-based resource allocation to DASs.

Copyright

© 2012, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bo Wu
AU  - Yong Ding
PY  - 2012/08
DA  - 2012/08
TI  - Chunk-based User Selection and Resource Allocation in Distributed Secure MISOOFDMA Systems
BT  - Proceedings of the 2012 International Conference on Computer Application and System Modeling (ICCASM 2012)
PB  - Atlantis Press
SP  - 814
EP  - 817
SN  - 1951-6851
UR  - https://doi.org/10.2991/iccasm.2012.206
DO  - 10.2991/iccasm.2012.206
ID  - Wu2012/08
ER  -