CAJ | 학술논문

由于频谱资源的短缺,未来的无线通信网络需要同时与其他无线通信网络共同使用相同频谱.近年来出现的干扰对齐技术有效地解决了同一个干扰网络中不同用户的共存性问题.在已经实施干扰对齐的多天线干扰网络中,为了使新的干扰网络既使用相同的频谱资源又不能影响其他原已对齐的干扰网络,该文提出一种不同网络之间干扰对齐的迭代算法.该算法以消除新网络中的干扰为目标进行优化,使所有用户都能同时进行无干扰的通信.仿真结果表明,当新网络中的发射节点和接收节点都配置充足的天线时,新网络中的用户就可以达到干扰对齐,从而不仅可以进行无干扰的通信,也不会影响旧网络中的用户.无论是新网络中的发射节点的天线不足还是接收节点的天线不足,都会对新网络中的不同用户的无干扰通信产生影响,并且发射节点天线不足带来的影响更大.
유우빈보자원적단결,미래적무선통신망락수요동시여기타무선통신망락공동사용상동빈보.근년래출현적간우대제기술유효지해결료동일개간우망락중불동용호적공존성문제.재이경실시간우대제적다천선간우망락중,위료사신적간우망락기사용상동적빈보자원우불능영향기타원이대제적간우망락,해문제출일충불동망락지간간우대제적질대산법.해산법이소제신망락중적간우위목표진행우화,사소유용호도능동시진행무간우적통신.방진결과표명,당신망락중적발사절점화접수절점도배치충족적천선시,신망락중적용호취가이체도간우대제,종이불부가이진행무간우적통신,야불회영향구망락중적용호.무론시신망락중적발사절점적천선불족환시접수절점적천선불족,도회대신망락중적불동용호적무간우통신산생영향,병차발사절점천선불족대래적영향경대.
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.