In this paper, we propose a new signal organization method to work in the structure of the multi level coding (MLC). The transmit bits are divided into opportunistic bit (OB) and conventional bit (CB), which are mapped to the lower level- and higher level signal in parallel to the MLC, respectively. Because the OB's mapping does not require signal power explicitly, the energy of the CB modulated symbol can be doubled. As the result, the overall mutual information of the proposed method is found higher than that of the conventional BPSK in one dimensional case. Moreover, the extension of the method to the two-complex-dimension shows the better performance over the QPSK. The numerical results confirm this approach.

翻译：在本文中,我们提出一个新的信号组织方法,在多层次编码结构中开展工作。传输位数分为机会位(OB)和常规位数(CB),分别绘制到与刚果解放运动平行的较低层次和更高层次的信号。由于OB的绘图并不明确要求信号功率,因此CB调制符号的能量可以加倍。因此,在一维案例中,发现拟议方法的总体相互信息高于常规BPSK。此外,该方法的扩展与两个组合式组合式组合式组合式组合相比,表明该方法的性能优于QPSK。数字结果证实了这一方法。