The reduction of power consumption is important for wireless communications and networks.To develop the energy-saving technologies for future wireless transmissions and networks,this paper presents two basic study poi...The reduction of power consumption is important for wireless communications and networks.To develop the energy-saving technologies for future wireless transmissions and networks,this paper presents two basic study points:1)The multiple events are merged into a single event;2)the high-order mode is changed to the low-order mode.For this rea⁃son,we seek that multiple events in wireless transmission links are fused into a single event from Shannon formulas.We also analyze the relationship between the information modula⁃tion and the error correction,and give a fusion structure of error-corrected modulation.The energy-saving performance of the error-corrected modulation method is further analyzed through comparison with the traditional methods of modulation plus error correction.The re⁃sults of numerical analysis demonstrate the wireless energy saving methods for wireless sys⁃tems based on Shannon formulas are the achievable efficient schemes.展开更多
为了对腭裂语音的高鼻音进行等级区分,提出基于声学特征参数分析的腭裂语音高鼻音等级自动识别算法,提取基于香农能量和Mel倒谱系数(Mel frequency cepstrum coefficient,MFCC)的S-MFCC作为声学特征参数,结合高斯混合模型(Gaussian mixt...为了对腭裂语音的高鼻音进行等级区分,提出基于声学特征参数分析的腭裂语音高鼻音等级自动识别算法,提取基于香农能量和Mel倒谱系数(Mel frequency cepstrum coefficient,MFCC)的S-MFCC作为声学特征参数,结合高斯混合模型(Gaussian mixture model,GMM)分类器实现对腭裂语音4类高鼻音等级(正常、轻度、中度和重度)的自动识别。实验结果表明,提出的自动识别算法取得了较高的高鼻音类别正确识别率,对4类高鼻音的平均识别率达到79%以上,其中,提出的S-MFCC参数取得了85%的平均正确识别率,优于传统的香农能量算法、MFCC算法,具有较高的临床应用价值。展开更多
基金This work was supported by National Natural Science Foundation of Chi⁃na(NSFC)under Grant No.61631018.
文摘The reduction of power consumption is important for wireless communications and networks.To develop the energy-saving technologies for future wireless transmissions and networks,this paper presents two basic study points:1)The multiple events are merged into a single event;2)the high-order mode is changed to the low-order mode.For this rea⁃son,we seek that multiple events in wireless transmission links are fused into a single event from Shannon formulas.We also analyze the relationship between the information modula⁃tion and the error correction,and give a fusion structure of error-corrected modulation.The energy-saving performance of the error-corrected modulation method is further analyzed through comparison with the traditional methods of modulation plus error correction.The re⁃sults of numerical analysis demonstrate the wireless energy saving methods for wireless sys⁃tems based on Shannon formulas are the achievable efficient schemes.
基金supported by the National Natural Science Foundation of China(21503076)Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province,China(Xiang Jiao Tong[2012]318)~~