摘要
随着LTE的全面商业化,持续增长的市场需求对移动通信网络提出了更高的要求。本文以LTE的演进路线为主要框架,对其早期版本以及LTE-A中的关键技术进行了综述。相比于LTE,LTE-A通过载波聚合等技术极大的改善了用户容量并满足了IMT-Advanced对频谱效率的要求,在更充分的利用了频谱资源与改善干扰性能的同时维持了较好的后向兼容性。LTE-A之后的演进方向和各项技术的持续增强将更好的与未来用户需求同步,本文最后重点介绍了大规模MIMO、高密度异构网络以及D2D通信三项技术,指出了其潜在的性能优势与实施中面临的挑战。
Along with the full commercialization of LTE, the continuous growth of market demand for mobile communi-cation network puts forward some higher requirements. In this paper, the evolution of LTE route as the main framework,for the early version, and the key technologies of LTE-A were summarized. Compared with LTE, LTE - A through carrieraggregation technology greatly improves the user capacity and spectrum efficiency of the IMT - Advanced request, in re-sources and improving to make better use of the spectrum interference performance while maintaining a good backwardcompatibility. Direction and technical evolution of LTE - after A continuous enhancement will be better synchronizationwith the future user requirements, finally, the paper mainly introduces the multi-input multi-output （MIMO）, high densityheterogeneous network and large-scale D2D communication three technologies, points out the potential advantages andchallenges in the implementation of the performance.
出处
《办公自动化》
2014年第16期47-52,共6页
Office Informatization
