CAJ | 학술논문

提出一种基于传输模式切换的新型自适应空间调制(SM)算法，采用最近邻估计作为系统性能度量的标准，根据信道的状态信息，动态地调整传输模式以最小化系统的成对错误概率，实现在系统频谱利用效率固定和发送功率受限的情况下系统性能的提升。针对SM系统数据传输的特殊性，即一个时刻只有一根发射天线激活来携带数据信息，给出了传输模式切换的简化算法。仿真结果表明，算法实现简单，反馈量小，系统性能优于传统的空间调制方法并且能在高相关信道下工作。
제출일충기우전수모식절환적신형자괄응공간조제(SM)산법，채용최근린고계작위계통성능도량적표준，근거신도적상태신식，동태지조정전수모식이최소화계통적성대착오개솔，실현재계통빈보이용효솔고정화발송공솔수한적정황하계통성능적제승。침대SM계통수거전수적특수성，즉일개시각지유일근발사천선격활래휴대수거신식，급출료전수모식절환적간화산법。방진결과표명，산법실현간단，반궤량소，계통성능우우전통적공간조제방법병차능재고상관신도하공작。
A transmit mode switching (TMS) assisted adaptive spatial modulation (SM) scheme is proposed for multiple-input multiple-output (MIMO) transmission systems. The proposed scheme yields a performance bound with the aid of the nearest neighbor approximation. At a predefined spectral efficiency and transmit power target, the proposed scheme is capable of selecting the appropriate SM mode to minimize the conditioned pairwise error probability. Moreover, a simplified calculation method utilizing the special information transmission method of SM is proposed for mode selection. Simulation results show that the proposed scheme exhibits a better bit error ratio (BER) performance at low complexity cost compared with the conventional SM scheme, especially for the correlated MIMO channels.