摘要
JT和智能天线下行波束成形联合优化不仅可以减少智能天线主波束内存在的多用户干扰,而且可以降低移动台的复杂度,但JT的前提条件是发射端已知信道信息,目前的JT算法都是假设通过信道估计的信道冲激响应值就是理想的信道信息.通过研究非理想信道信息对抑制SA主波束内多用户干扰的方法的影响,分析了估计误差及其产生的原因,通过仿真进一步验证了理论结果.
The combination and optimization of JT and smart antenna downlink beam forming can reduce the inter- ference of many users in the main beam of smart antenna and the complexity of the moving station, while the pre--requi- sition for JT is that the transmitting terminal has known the channel information. Nowadays JT calculation all takes the estimated channel impulse response value as the ideal channel information, This paper has studied the influence of non-- ideal channel information upon reducing multi-- user interference in SA main beam, analyzed the estimated errors and the reasons, and proved the theory by simulation.
出处
《郧阳师范高等专科学校学报》
2011年第3期96-98,共3页
Journal of Yunyang Teachers College
