【摘 要】
：
Channel estimation is very important for MIMO (Multiple Input Multiple Output) OFDM (Or-thogonal Frequency Division Multiplexing) systems, but its precision is
【出 处】
：
Journal of Electronics
论文部分内容阅读
Channel estimation is very important for MIMO (Multiple Input Multiple Output) OFDM (Or-thogonal Frequency Division Multiplexing) systems, but its precision is reduced due to the noise in channel. In this letter, circularly slipping window is introduced to resist the noise. It can be proved by simulation that with the same channel model, optimal slipping window length is the same with different vehicle speed. MSE (Minimum Square Error) of channel is greatly reduced with circularly slipping window, and performance of the system is closed to that with correct channel estimation.
Channel estimation is very important for MIMO (Multiple Input Multiple Output) OFDM (Or-thogonal Frequency Division Multiplexing) systems, but its precision is reduced due to the noise in channel. In this letter, circularly slipping window is introduced to resist the noise. It can be proved by simulation that with the same channel model, optimal slipping window length is the same with different vehicle speed. MSE (Minimum Square Error) of channel is greatly reduced with circularly slipping window, and performance of the system is closed to that with correct channel estimation.
其他文献
目的:探讨血清胆红素、糖化血红蛋白与血脂联合检验在2型糖尿病并冠心病中的诊断价值.方法:选择我院就诊的80例2型糖尿病患者的临床资料,随机分为40例对照组(单纯糖尿病者)与
Cavitation erosion behavior of cast iron in water and mixed 50%H2O+ 50%C2H6O2 with different temperatures and distances between two samples have been studie
他不肯安静,总要发出一些“不受欢迎”的声音。张开济:原籍杭州,1912年出生于上海,1935年毕业于南京中央大学建筑系。曾任北京建筑设计研究院总建筑师、北京市政府建筑顾问、
Studies on the electrodeposition of aluminum on common steel substrate from molten salts based on chlorides were quite extensive.However,there was very litt
目的:了解我院内科住院患者血栓发生风险现状,为采取有效的护理措施降低血栓发生风险提供依据.方法:选取2019年6月至2020年1月本院住院患者100人,采用现场问卷调查的形式,面
A Cr-Co-P alloy electroplating coating was prepared from trivalent chromium bath and the appearance and performances of the coating were characterized.The C
目的:分析锁骨钩钢板治疗锁骨远端骨折和肩锁关节脱位的应用效果.方法:选取本院2019年11月-2020年11月诊治的68例锁骨远端骨折和肩锁关节脱位患者开展本次试验研究,随机将其
Anodic alumina oxide (AAO) templates with multi-branched structure were fabricated in a phosphoric acid.Atomic force microscope (AFM) was utilized to invest
目的:研讨不同降糖方法对伴有高血糖急性缺血性脑卒中患者预后的不同作用.方法:选择2019年2月至2020年4月在我院接受治疗的高血糖急性缺血性脑卒中患者94例纳入研究,按照随机
With excellent wear resistance and corrosion resistance of films,simple procedures,high production efficiency and being environmentally friendly,micro-arc o