摘要
3D MIMO同时考虑水平维和垂直维波束,虽然更加匹配UPA(Uniform Planar Array)天线阵列场景,但是目前采用的KPC(Kronecker Product Codebook)码本为对空间进行均等划分,系统性能受限于用户分布密度。文章提出一种根据用户分布密度的3D MIMO码本方案,以及设计了一种根据用户密集程度的不均匀码字分配方案。仿真表明,相比KPC码本,提出的码本方案降低了误码率,提升了系统性能。
3 D MIMO considers both horizontal and vertical beams, although it matches UPA（Uniform Planar Array） antenna array scenes more, the current KPC（Kronecker-Product based Codebook） is based on the uniform subdivision of space, therefore the performance of the system is limited by the user’s distribution density. In this paper, a 3 D MIMO codebook scheme which matches user’s distribution density is proposed, and a nonuniformcodeword allocation scheme according to user’s intensity is designed. Simulation results show that compared with KPC codebook, the codebook scheme proposed in this paper significantly reduces the bit error rate and improves the system performance.
出处
《信息通信》
2018年第2期29-32,共4页
Information & Communications
基金
国家科技重大专项"低功耗大连接5G系统概念样机研发"(2017ZX03001004-004)
