微型机与应用
微型機與應用
미형궤여응용
MICROCOMPUTER & ITS APPLICATIONS
2014年
12期
57-60
,共4页
公零点%多输入多输出%多值信号%均衡器%盲检测
公零點%多輸入多輸齣%多值信號%均衡器%盲檢測
공영점%다수입다수출%다치신호%균형기%맹검측
common zeros%multiple input multiple output%multi-valued signals%equalizer%blind detection
针对多输入多输出（ MIMO ）实信道系统，在较弱的半可逆条件下，为实现该系统中实多值信号的高效、快速盲检测，采用直接盲多用户检测，将多值信号转化成二值信号的线性组合，通过矩阵变换的方法把多值信号盲检测问题转化为一个带约束的二次规划问题，通过对转化后的优化问题的处理实现信号的盲检测，并以4PAM 信号为例进行了仿真。仿真结果表明，与经典的子空间算法相比，该算法表现出了良好的性能和更广泛的应用范围。
針對多輸入多輸齣（ MIMO ）實信道繫統，在較弱的半可逆條件下，為實現該繫統中實多值信號的高效、快速盲檢測，採用直接盲多用戶檢測，將多值信號轉化成二值信號的線性組閤，通過矩陣變換的方法把多值信號盲檢測問題轉化為一箇帶約束的二次規劃問題，通過對轉化後的優化問題的處理實現信號的盲檢測，併以4PAM 信號為例進行瞭倣真。倣真結果錶明，與經典的子空間算法相比，該算法錶現齣瞭良好的性能和更廣汎的應用範圍。
침대다수입다수출（ MIMO ）실신도계통，재교약적반가역조건하，위실현해계통중실다치신호적고효、쾌속맹검측，채용직접맹다용호검측，장다치신호전화성이치신호적선성조합，통과구진변환적방법파다치신호맹검측문제전화위일개대약속적이차규화문제，통과대전화후적우화문제적처리실현신호적맹검측，병이4PAM 신호위례진행료방진。방진결과표명，여경전적자공간산법상비，해산법표현출료량호적성능화경엄범적응용범위。
This paper focus on the Multi-Input Multi-Output ( MIMO ) system . On the semi-reversible condition which is a weaker criteria , in order to improve transmission performance and detect the real multilevel signals efficiently and quickly in MIMO systems , this paper uses direct blind multiuser detection , transforms the multi-valued signals into a linear combination of binary signals . Then it transforms the problem of blind detection of a sequence of multilevel signal into a binary constrained quadratic pro-gramming problem using the matrix transformation method . At last , it conducts the transformed optimization problem . This paper uses 4PAM as an example , simulation results illustrate that comparing with the classical subspace algorithm , the algorithm proposed in this paper has good effective performance and large applicable area .
