傳統(tǒng)的BLAST系統(tǒng)具有極高的頻譜利用率，但是基于充分散射環(huán)境假設(shè)，即認(rèn)為收發(fā)天線陣元之間完全獨(dú)立，而這在宏蜂窩移動(dòng)環(huán)境下一般并不成立。本文主要根據(jù)宏蜂窩MIMO信道模型，研究了AOA分布對(duì)V-BLAST系統(tǒng)的影響，通過對(duì)模擬實(shí)驗(yàn)結(jié)果的分析，指出MS一側(cè)的AOA分布對(duì)室外MIMO系統(tǒng)性能起著關(guān)鍵性影響。
關(guān)鍵詞：V-BLAST；MIMO；相關(guān)；瑞利信道； AOA
Astract：The traditional BLAST systems have drawn massive attentions among the researchers because of its high spectrum efficiency, but it is based on the assumptions of the rich-scattering environments, it means totally independent for the receivers and transmitters’ antenna elements. While the independence assumption is not factual in practical macro-cell mobile environments. Based on the macro-cell MIMO channel model proposed by Ali Abdi,
the effect of s AOA angle spreads on V-BLAST system was investigated. By analyzing the simulations results, the distribution of MS side’s AOA have key influences on performance of outdoor MIMO systems.
Key words: V-BLAST；MIMO； AOA