摘要
针对OFDM/OQAM系统中格状导频信道估计,辅助导频信道估计方法辅助导频能量消耗大的问题,提出了一种改进的辅助导频信道估计方法。通过改变导频结构的布置,减少辅助导频消除干扰的时频格点数目,对其余时频格点的干扰通过置零法进行消除,从而降低了辅助导频法中辅助导频的能量消耗。仿真结果表明,改进方法保证了信道估计的性能,与现有的辅助导频方法相比,提升了信道估计的精度,同时有效降低了系统辅助导频的能量消耗。
The auxiliary pilot channel estimation method for OFDM/OQAM system has lower power efficiency. In view of this problem,this paper proposes an improved Auxiliary Pilot（ AP） channel estimation method.In this method,the pilot structure is changed to reduce the number of time frequency points whose interference is eliminated by the auxiliary pilot and set to zero for other time frequency point that adjacent to the pilot,thereby reducing the energy consumption of auxiliary pilot.The simulation results show that the proposed method can maintain a better channel estimation performance,improve the accuracy of channel design,and have higher power efficiency,compared with existing auxiliary pilot method.
作者
邱上飞
薛伦生
陈西宏
QIU Shangfei;XUE Lunsheng;CHEN Xihong(Air and Missile Defense College,Air Force Engineering University,Xi＇an 710051,China)
出处
《无线电工程》
2018年第11期13-17,共5页
Radio Engineering
基金
国家自然科学基金资助项目(61671468)
