Analyze and Comment on Spectral Efficiency of VMSK Modulation
In the recent decade, H.R.Walker and others presented a high spectral efficient modulation ——VMSK. According to their analyses, VMSK modulation can reach 30 bit/s/Hz and even more simply without loss of SNR. In this paper, the waveform of VMSK is decomposed based on the time domain. The performance of VMSK is analyzed at signal power spectrum point. An example is given to show that the spectral efficiency of VMSK is not high as Walker and others described. Actually, VMSK does not realize the signal transmission with ultra-narrowband.
VMSK Spectral efficiency Power spectral density
Zhiyong Shi Jianming Huang Zhenyu Zhang Yalou Sang
Chongqing Communication Institute,China 400035;South China University of Technology,China 510640 XiDian University,China 710071 Chongqing Communication Institute,China 400035
国际会议
武汉
英文
2006-09-01(万方平台首次上网日期,不代表论文的发表时间)