CAJ | 학술논문

在采用空时码的无线通信系统中,收发2端较差的路径会降低系统的性能.提出了多速率线性离散码(LDC),并对其进行了分析,给出了一种基于矩阵扩展方法的设计算法.多速率LDC是传统LDC和LDC-TAS的BER性能的折中.进而提出了一种性能优于传统LDC-A-TAS算法的多速率LDC自适应发送天线选择(A.TAS)算法.
재채용공시마적무선통신계통중,수발2단교차적로경회강저계통적성능.제출료다속솔선성리산마(LDC),병대기진행료분석,급출료일충기우구진확전방법적설계산법.다속솔LDC시전통LDC화LDC-TAS적BER성능적절중.진이제출료일충성능우우전통LDC-A-TAS산법적다속솔LDC자괄응발송천선선택(A.TAS)산법.
The performance may be reduced by the path between transmission and reception in a bad state in wireless communication systems using space-time codes(STCs).An STC called multirate linear dispersion codes(LDC)is proposed and analyzed,and its BER performance is a good trade-off between classical LDC and LDC-TAS.A design of multi-rate LDC based on extended matrix method is given.Further,an algorithm of adaptive transmit antenna selection(A-TAS)with multi-rate LDC is proposed,and it has better performance than classical LDC-A-TAS.