计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2013年
7期
147-150
,共4页
盲多用户接收机%信号子空间接收机%低复杂度%空时分组码-正交频分复用(STBC-OFDM)%厄尔米特矩阵
盲多用戶接收機%信號子空間接收機%低複雜度%空時分組碼-正交頻分複用(STBC-OFDM)%阨爾米特矩陣
맹다용호접수궤%신호자공간접수궤%저복잡도%공시분조마-정교빈분복용(STBC-OFDM)%액이미특구진
blind multi-user receiver%subspace-based receiver%lower computation complexity%STBC-OFDM%Hermitian matrix systems
为了降低空时分组码-正交频分复用(STBC-OFDM)系统中盲多用户接收机的计算复杂度,将基于子空间的接收机应用到 STBC-OFDM 系统中,证明其可以有效地降低计算复杂度并加快收敛速度.在此基础上,利用 STBC 码的正交特性推导出了两个权值之间的关系式,使得计算复杂度又降低了一半.仿真结果表明所提出的盲多用户接收机能剔除常规接收机中的冗余度,在误码率不变的前提下有效地解决了常规接收机中计算量大的问题.
為瞭降低空時分組碼-正交頻分複用(STBC-OFDM)繫統中盲多用戶接收機的計算複雜度,將基于子空間的接收機應用到 STBC-OFDM 繫統中,證明其可以有效地降低計算複雜度併加快收斂速度.在此基礎上,利用 STBC 碼的正交特性推導齣瞭兩箇權值之間的關繫式,使得計算複雜度又降低瞭一半.倣真結果錶明所提齣的盲多用戶接收機能剔除常規接收機中的冗餘度,在誤碼率不變的前提下有效地解決瞭常規接收機中計算量大的問題.
위료강저공시분조마-정교빈분복용(STBC-OFDM)계통중맹다용호접수궤적계산복잡도,장기우자공간적접수궤응용도 STBC-OFDM 계통중,증명기가이유효지강저계산복잡도병가쾌수렴속도.재차기출상,이용 STBC 마적정교특성추도출료량개권치지간적관계식,사득계산복잡도우강저료일반.방진결과표명소제출적맹다용호접수궤능척제상규접수궤중적용여도,재오마솔불변적전제하유효지해결료상규접수궤중계산량대적문제.
@@@@To consider effectively reducing computation complexity of multi-user receiver for STBC-OFDM systems, the subspace-based receiver is proposed for STBC-OFDM systems, it can effectively reduce the computational complexity and accelerate the convergence rate. Utilizing the orthogonal feature of STBC, the relation of two weights equation is obtained, which half of the computational cost is saved. Simulation results demonstrate that the blind multi-user receiver can eliminate redundancy of the traditional receiver, the problems of higher computational complexity in traditional receiver are effectively solved and main-tain the same BER.
