信息通信
信息通信
신식통신
XINXI TONGXIN
2014年
10期
11-12
,共2页
正交频分复用%信道估计%最小乘二算法%最小均方误差%误码率
正交頻分複用%信道估計%最小乘二算法%最小均方誤差%誤碼率
정교빈분복용%신도고계%최소승이산법%최소균방오차%오마솔
OFDM%channel estimation%LS%LMMSE%error rate
正交频分复用(OFDM)技术采用多载波传输方式,成为了第四代移动通信核心技术。OFDM系统可采用基于导频的信道估计方法,提高信道传输的准确性。文章在matlab环境下对块状导频进行仿真,对最小乘二算法和最小均方误差估计算法进行了比较,经过实验得出,块状导频更适合于慢衰落信道。
正交頻分複用(OFDM)技術採用多載波傳輸方式,成為瞭第四代移動通信覈心技術。OFDM繫統可採用基于導頻的信道估計方法,提高信道傳輸的準確性。文章在matlab環境下對塊狀導頻進行倣真,對最小乘二算法和最小均方誤差估計算法進行瞭比較,經過實驗得齣,塊狀導頻更適閤于慢衰落信道。
정교빈분복용(OFDM)기술채용다재파전수방식,성위료제사대이동통신핵심기술。OFDM계통가채용기우도빈적신도고계방법,제고신도전수적준학성。문장재matlab배경하대괴상도빈진행방진,대최소승이산법화최소균방오차고계산법진행료비교,경과실험득출,괴상도빈경괄합우만쇠락신도。
Orthogonal Frequency Division Multiplexing (OFDM) technology uses multicarrier transmission mode,is becoming the fourth generation mobile communication core technologies.OFDM system can use the channel estimation method based on pilot,To improve the accuracy of channel transmission.The paper Compared the Least Square and Minimum Mean-Square error estimation algorithm based on block-type pilot assignment in mat-lab.Through experiment, block pilot is better suited for slow fading channel.