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| Research on New User Coexistence with Interference Alignment Network |
| Yue Guang-rong Li Qing |
| National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China |
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Abstract Future wireless network must consider the problem that utilizing the same frequency band with other wireless network because of lacking of frequency spectrum. Recent research results find that interference alignment can make the all users in network utilize the same frequency efficiently. In order to utilize the same frequency band with other interference alignment network and have no influence on it, an iterative algorithm for interference alignment between two networks is proposed. This algorithm based on eliminating the interference in new network can make all users communicate well. Numerical results show that new users will communicate as no interference and have no influence on other users when transmitters and receivers have enough antennas. If the transmitters or the receivers lack of antennas, the interference alignment network will degrade performance. Lack of antennas at transmitter will have more harm.
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Received: 19 July 2012
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Corresponding Authors:
Li Qing
E-mail: liqing2601303005@163.com
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2013, Vol. 35 
