无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2015年
7期
6-9
,共4页
张鑫明%姚斌%朱毅超%梁亮%郭超
張鑫明%姚斌%硃毅超%樑亮%郭超
장흠명%요빈%주의초%량량%곽초
单载波%块迭代频域均衡%时域均衡%恒包络零自相关序列
單載波%塊迭代頻域均衡%時域均衡%恆包絡零自相關序列
단재파%괴질대빈역균형%시역균형%항포락령자상관서렬
single-carrier%Frequency-Domain iterative block DFE(FD-IBDFE)%Time-domain Equalizer CAZAC
为提升短波通信收端均衡算法性能，研究了单载波频域块迭代均衡技术的原理，给出了算法框架并推导了前、反馈抽头系数的计算公式，仿真了以CAZAC序列为同步头的单载波频域块迭代均衡技术在短波短帧通信中的性能，并与基于RLS准则的单载波时域均衡技术进行了对比。仿真结果表明，选取具有平坦功率谱特性的同步头或训练序列时，频域块迭代均衡能获得与时域均衡相近的性能，且计算复杂度明显降低。
為提升短波通信收耑均衡算法性能，研究瞭單載波頻域塊迭代均衡技術的原理，給齣瞭算法框架併推導瞭前、反饋抽頭繫數的計算公式，倣真瞭以CAZAC序列為同步頭的單載波頻域塊迭代均衡技術在短波短幀通信中的性能，併與基于RLS準則的單載波時域均衡技術進行瞭對比。倣真結果錶明，選取具有平坦功率譜特性的同步頭或訓練序列時，頻域塊迭代均衡能穫得與時域均衡相近的性能，且計算複雜度明顯降低。
위제승단파통신수단균형산법성능，연구료단재파빈역괴질대균형기술적원리，급출료산법광가병추도료전、반궤추두계수적계산공식，방진료이CAZAC서렬위동보두적단재파빈역괴질대균형기술재단파단정통신중적성능，병여기우RLS준칙적단재파시역균형기술진행료대비。방진결과표명，선취구유평탄공솔보특성적동보두혹훈련서렬시，빈역괴질대균형능획득여시역균형상근적성능，차계산복잡도명현강저。
The principle of frequency?domain iterative block decision?feedback equalizer is studied.The algorithm diagram is pres?ented and the calculation formulas of feed?forward and feed?back coefficients are given. To analysis the performance of this algorithm, simulation of its application in short frame HF communication is carried out.Experiment results show that when choosing fitting training sequence likes CAZAC,frequency?domain iterative block decision?feedback equalizer can achieve similar performance as time?domain equalizer with significant reduction of computing complexity.
