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| The vmsk modulation delusion |
| Chen Xiaoyi; Yao Qingdong; Liu Xiaocheng |
| Dept. of Info. Sci and Electron Eng.,Zhejiang University, Hangzhou 310027, China |
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Abstract H. R. Walker presented a high spectral efficiency modulation (VMSK). It can reach 30 bit/(s·Hz) simply without loss of SNR in his analysis. There are papers introduce this technology in China too. But, through deeply analysis based on the engineering point, a very regrettable conclusion is obtained, i.e, this technology is a beautiful rainbow!
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Received: 24 June 2002
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2003, Vol. 25 
