CAJ | 학술논문

随着下一代移动通信研究的深入,Massive MIMO 技术已成为业界研究的热点。针对 Massive MIMO 系统特有的天线体积大、信道近场非平稳的特性,构建出较真实的信道模型,该模型适用于 Massive MIMO非视距、瑞利平坦衰落环境。在系统仿真中,基站侧采用128根线形排列的天线,基站天线到信道散射体的导向矩阵由精确的波程差来确定,得到发射端相关矩阵,并结合Kronecker模型构建信道。结合不同的预编码方法和散射体分布情况,对比分析了其对 Massive MIMO信道容量的影响。该信道的构建与分析能更准确地反映信道特性,具有较强的理论价值和实践意义。
수착하일대이동통신연구적심입,Massive MIMO 기술이성위업계연구적열점。침대 Massive MIMO 계통특유적천선체적대、신도근장비평은적특성,구건출교진실적신도모형,해모형괄용우 Massive MIMO비시거、서리평탄쇠락배경。재계통방진중,기참측채용128근선형배렬적천선,기참천선도신도산사체적도향구진유정학적파정차래학정,득도발사단상관구진,병결합Kronecker모형구건신도。결합불동적예편마방법화산사체분포정황,대비분석료기대 Massive MIMO신도용량적영향。해신도적구건여분석능경준학지반영신도특성,구유교강적이론개치화실천의의。
With the continuous development of the research on next generation wireless communication,Massive MIMO has become the focus topics of the academic and the industry.The channel model is suitable for a non-line of site (NLOS)Rayleigh flat fading channel of Massive MIMO system which has a large aperture array at the base station. And according to the Near-flied effect and non-stationaries over the large aperture array of Massive MIMO system,we improve the convention non-line of site (NLOS)channel model.In the system simulation,we using a 128 element linear array at the base station and calculate the steering matrix of transmit array with strict wave path difference between different antenna element.Then we can obtain transmit correlation matrix and generate the corresponding channel matrix by Kronecker channel model.The paper compared and analyzed the effects of different precoding methods and scatters on channel capacity.The channel construction and analysis can more accurate on representing the channel characterizes of Massive MIMO,which has the strong theory value and the practice significance.