CAJ | 학술논문

M IM O系统由于在收发两端采用多天线，可以获得复用增益和分集增益，克服了无线信道的衰落，并提高了数据传输效率。然而，如何去权衡这两者之间的关系，是研究的重点。从简单的M IM O系统模型入手，在确定衡量其系统性能标准的基础上，研究2×2 MIMO系统的3种发送策略，并对比分析其分集增益及复用增益，为MIMO系统在不同信道条件下如何权衡两者的关系提供一定的参考价值。
M IM O계통유우재수발량단채용다천선，가이획득복용증익화분집증익，극복료무선신도적쇠락，병제고료수거전수효솔。연이，여하거권형저량자지간적관계，시연구적중점。종간단적M IM O계통모형입수，재학정형량기계통성능표준적기출상，연구2×2 MIMO계통적3충발송책략，병대비분석기분집증익급복용증익，위MIMO계통재불동신도조건하여하권형량자적관계제공일정적삼고개치。
MIMO system can get additional space-diversity gain and multiplexing gain by set multiple antennas at the trasmitter and the receiver ,overcome the fading of the wireless channel ,and increase the data transmission rate .However it is important that ,how to balance the gain between space-diver-sity and multiplexing ,and will be discussed in this paper .Based on the standard of measuring the per-formance of MIMO system ,researching three transmit tactics of 2 × 2 MIMO system .which were compared to analysis their diversity gain and degree of freedom ,the paper gives a reference in choo-sing the best transmit tactics under the different condition channels of MIMO system .