On feasibility of linear interference alignment for single-input–single-output multi-frequency interference channel
This study explores the feasibility of linear interference alignment (IA) for a (M × M, 1)K system with multi-frequency independent channels. The authors prove that number of users K ≤ 2M − 2 is a necessary condition for (M × M, 1)K multi-frequency IA system, which is less than that of (M × M, 1)K m...
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Published in | IET communications Vol. 8; no. 12; pp. 2207 - 2212 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Stevenage
The Institution of Engineering and Technology
01.08.2014
John Wiley & Sons, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | This study explores the feasibility of linear interference alignment (IA) for a (M × M, 1)K system with multi-frequency independent channels. The authors prove that number of users K ≤ 2M − 2 is a necessary condition for (M × M, 1)K multi-frequency IA system, which is less than that of (M × M, 1)K multiple-input–multiple-output system (i.e. K ≤ 2M − 1). The conclusion can be extended to all cases with the diagonal channel matrix. They also reveal that the traditional frequency division multiplexing method is inefficient in spectrum utilisation. They apply max-SINR (signal to interference plus noise ratio) and iterative IA algorithms and the author's simulation results verify that IA algorithms work well in (M × M, 1)2M–2 IA system. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1751-8628 1751-8636 1751-8636 |
DOI: | 10.1049/iet-com.2014.0017 |