Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems

Karama Hamdi, Wei Zhang, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Citations (Scopus)

Abstract

In this paper, we consider the coexistence between a large number of cognitive radio users and a licensed user in order to enhance the spectrum efficiency. Zero-forcing beamforming (ZFB) is utilized as a downlink precoding technique that precancels inter-user interference in our multiuser cognitive multiple-input/multiple-output (MIMO) system. When there is a large number of users, the system performance can be significantly increased by selecting a subset of users and a set of receive antennas for each user. In particular, to reduce the complexity, we propose a receive antenna selection method followed by multi-user selection in order to maximize the downlink throughput as well as mitigate the interference to the primary user. Performance results show that our proposed method is able to achieve significant complexity reduction at the expense of a little sum-rate throughput loss.

Original languageEnglish
Title of host publicationICC 2008 - IEEE International Conference on Communications, Proceedings
Pages4038-4042
Number of pages5
DOIs
Publication statusPublished - 2008
Externally publishedYes
EventIEEE International Conference on Communications, ICC 2008 - Beijing, China
Duration: 19 May 200823 May 2008

Other

OtherIEEE International Conference on Communications, ICC 2008
CountryChina
CityBeijing
Period19/5/0823/5/08

Fingerprint

Scheduling
Throughput
Antennas
Cognitive radio
Beamforming

ASJC Scopus subject areas

  • Media Technology

Cite this

Hamdi, K., Zhang, W., & Letaief, K. (2008). Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems. In ICC 2008 - IEEE International Conference on Communications, Proceedings (pp. 4038-4042). [4533794] https://doi.org/10.1109/ICC.2008.758

Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems. / Hamdi, Karama; Zhang, Wei; Letaief, Khaled.

ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 4038-4042 4533794.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hamdi, K, Zhang, W & Letaief, K 2008, Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems. in ICC 2008 - IEEE International Conference on Communications, Proceedings., 4533794, pp. 4038-4042, IEEE International Conference on Communications, ICC 2008, Beijing, China, 19/5/08. https://doi.org/10.1109/ICC.2008.758
Hamdi K, Zhang W, Letaief K. Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems. In ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. p. 4038-4042. 4533794 https://doi.org/10.1109/ICC.2008.758
Hamdi, Karama ; Zhang, Wei ; Letaief, Khaled. / Low-complexity antenna selection and user scheduling in cognitive MIMO broadcast systems. ICC 2008 - IEEE International Conference on Communications, Proceedings. 2008. pp. 4038-4042
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