On carrier pulse transmission characteristics of a k-th power n-stage Butterworth spectrum

摘要

This paper proposes a new waveform transmission system based on a rectangular spectrum for the purpose of effective use of the frequency. It describes that a received wave form is optimized by using k-th power n-stage Butterworth (BW) type which approximates a rectangular spectrum best as a transmitting spectrum, using the conventional m-stage BW type as a receiving filter, and selecting its 3dB bandwidth (βr). This paper shows that the range of k is 1 to 5 for optimization, eye opening is made to about 0.99 by selecting n and βr suitably and it is most desirable to set k to 2 from the points of inter-channel interference etc.