Abstract
In this paper, we investigate the interference mitigation from a cross-layer perspective for a cognitive radio (CR) multiple-input multiple-output (MIMO) network coexisting with a primary time-division-duplexing (TDD) system. The channel allocation in the media access control (MAC) layer and a subspace-based precoding scheme in the physical layer of the CR network are jointly considered to minimise the interference to the primary user and maximise the CR throughput. Two distributed cross-layer algorithms, namely, joint iterative channel allocation and precoding (JICAP) and non-iterative channel allocation and precoding (NICAP), are proposed for the cases with and without channel information among CR nodes, respectively. Moreover, a channel estimation scheme is also proposed to enable the NICAP. The effectiveness of the proposed algorithms over non-cross-layer counterpart is demonstrated via simulations.
Original language | English |
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Title of host publication | Proceedings of the 2011 IEEE International Conference on Communications |
Publisher | IEEE |
Pages | 1-6 |
Number of pages | 6 |
ISBN (Electronic) | 978-1-61284-231-8 |
ISBN (Print) | 978-1-61284-232-5 |
DOIs | |
Publication status | Published - 2011 |
Event | IEEE International Conference on Communications 2011 - Kyoto, Japan Duration: 5 Jun 2011 → 9 Jun 2011 |
Conference
Conference | IEEE International Conference on Communications 2011 |
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Abbreviated title | ICC 2011 |
Country/Territory | Japan |
City | Kyoto |
Period | 5/06/11 → 9/06/11 |