Joint time-frequency interference alignment in the frequency-selective Gaussian interference channel
To make up for the limitation that the traditional interference alignment can only align the signal in one dimensional domain,a novel joint time-frequency interference alignment scheme was put forward in the frequency-selective Gaussian interference channel（GIC）.After the frequency-selective GIC was...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2011-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74419111/ |
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| Summary: | To make up for the limitation that the traditional interference alignment can only align the signal in one dimensional domain,a novel joint time-frequency interference alignment scheme was put forward in the frequency-selective Gaussian interference channel（GIC）.After the frequency-selective GIC was changed into a set of parallel GICs,a set of time-frequency alignment matrices were employed which aligned the interference signal not only in time domain but also in frequency domain.An algorithm for calculating the time-frequency alignment matrices was presented based on the convex optimization.Computer simulations show that the joint time-frequency interference alignment can obtain the same performance as the traditional interference alignment while the joint time-frequency interference alignment can shorten the decoding time or reduce the occupation of the frequency resource.The joint time-frequency interference alignment scheme is an extension of the traditional interference alignment and provides a more flexible resource allocation approach between time domain and frequency domain. |
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| ISSN: | 1000-436X |