Keywords UNB;high efficiency modulation;VMSK;VWDK;power spectrum;SNR;relative demodulation;bandwidth efficiency;plastic filter;mutual information;channel capacity;

• 超窄带;高效调制;VMSK;VWDK;功率谱;信噪比;相关解调;带宽效率;整形滤波;互信息;信道容量;