Practical conditions of signal space alignment for generalized MIMO Y channel
Practical conditions of signal space alignment for generalized MIMO Y channel作者机构：State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing China State Key Laboratory of Wireless Mobile Communications China Academy of Telecommunications Technology Beijing China
出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))
年 卷 期：2012年第55卷第10期
页 面：2171-2182页
核心收录：
学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 081001[工学-通信与信息系统] 0812[工学-计算机科学与技术（可授工学、理学学位）]
基 金：supported by the National High-Technology Program of China (Grant No. 2011AA01A101) the International S&T Cooperation:Joint Research Project (Grant No. 2010DFB13020) the Doctorate Fund of the Ministry of Education of China (Grant No. 20090005120013)
主 题：Signal space alignment MIMO Y channel degrees of freedom number of antennas
摘 要：This paper proposes a generalization for applications of signal space alignment(SSA) in a generalized multiple input multiple output(MIMO) Y channel with K(K 2) nodes and an intermediate *** on that generalization,a method is introduced to determine the practical conditions for *** first study the generalized MIMO Y channel model with general signal demands;then,the degrees of freedom(DoF) achieved are given and are proved using *** SSA could decrease the number of antennas at the relay,it places new restrictions on the numbers of antennas at the *** then introduce a method to compare the models with and without SSA network coding(SSA-NC),mainly from the perspective of the total number of antennas *** results show that if each node must be able to exchange signals with all others,the model with SSA will definitely use more antennas to supply the same DoF,when K *** it is not necessary for every node to exchange signals with all others,the comparison can still be made by using the method introduced *** a result,the conditions under which SSA-NC is needed are presented.
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