Adaptive limited feedback for interference alignment in MIMO interference channels
| العنوان: | Adaptive limited feedback for interference alignment in MIMO interference channels |
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| المؤلفون: | Juan Meng, Chenglin Zhao, Shibao Li, Yang Zhang, Li Li |
| المصدر: | Eurasip Journal on Wireless Communications and Networking |
| بيانات النشر: | Springer International Publishing, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Interference alignment, Waterfilling, Computer science, Computer Networks and Communications, MIMO, Throughput, 02 engineering and technology, Data_CODINGANDINFORMATIONTHEORY, Interference (wave propagation), Upper and lower bounds, 0203 mechanical engineering, Control theory, 0202 electrical engineering, electronic engineering, information engineering, Electronic engineering, Overhead (computing), Path loss, Computer Science::Information Theory, 020301 aerospace & aeronautics, Research, Limited feedback, 020206 networking & telecommunications, Transmitter power output, Computer Science Applications, Channel state information, Signal Processing, Transceiver, Communication channel |
| الوصف: | It is very important that the radar sensor network has autonomous capabilities such as self-managing, etc. Quite often, MIMO interference channels are applied to radar sensor networks, and for self-managing purpose, interference management in MIMO interference channels is critical. Interference alignment (IA) has the potential to dramatically improve system throughput by effectively mitigating interference in multi-user networks at high signal-to-noise (SNR). However, the implementation of IA predominantly relays on perfect and global channel state information (CSI) at all transceivers. A large amount of CSI has to be fed back to all transmitters, resulting in a proliferation of feedback bits. Thus, IA with limited feedback has been introduced to reduce the sum feedback overhead. In this paper, by exploiting the advantage of heterogeneous path loss, we first investigate the throughput of IA with limited feedback in interference channels while each user transmits multi-streams simultaneously, then we get the upper bound of sum rate in terms of the transmit power and feedback bits. Moreover, we propose a dynamic feedback scheme via bit allocation to reduce the throughput loss due to limited feedback. Simulation results demonstrate that the dynamic feedback scheme achieves better performance in terms of sum rate. |
| اللغة: | English |
| تدمد: | 1687-1499 1687-1472 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d87eda77ab05be1130285fbd39866fe6Test http://europepmc.org/articles/PMC5030241Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....d87eda77ab05be1130285fbd39866fe6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16871499 16871472 |
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