A novel modulation technique is proposed in this paper

Non-orthogonal Multiple Modulation(NOMM).Based on estimation theory analysis

various well-performed modulation methods are presented in terms of signal constellations.Relevant error probability and bandwidth efficiency are also discussed.The result of numerical experiments shows that these completely new multiple modulations outperform the conventionals in bandwidth efficiency

which is owed to the unrestrainedness in orthogonality.NOMM offers a more effective method in practice and indicates a broad perspective of development for modulation techniques in theory as well.