Abstract
With interference alignment (IA), the achievable degrees of freedom (DoF) in wireless networks can be linearly scaled up with the number of users. However, to attain full DoF, the availability of perfect network channel state information (CSI) is mandatory, which impedes the practical deployment of IA since only partial network CSI may be accessible. In this paper, we investigate the effect of CSI mismatch on the performance of maximum signal-to-interference-plus-noise ratio (Max-SINR) algorithm. We show that while with perfect CSI, Max-SINR outperforms interference leakage minimization algorithms, with the presence of CSI mismatch, its comparative improvement becomes negligible. We then propose an adaptive Max-SINR which can notably improve the performance of original Max-SINR under CSI mismatch.
Original language | English |
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Title of host publication | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 7729-7733 |
Number of pages | 5 |
ISBN (Print) | 9781479928927 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | ICASSP 2014 - 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) - Florence, Italy, Florence, United Kingdom Duration: 4 May 2014 → 9 May 2014 |
Conference
Conference | ICASSP 2014 - 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) |
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Country/Territory | United Kingdom |
City | Florence |
Period | 4/05/14 → 9/05/14 |
Keywords / Materials (for Non-textual outputs)
- CSI mismatch
- interference alignment
- K-user constant MIMO interference channels
- Max-SINR