Spectral analysis of Sine and Cosine BOC modulated signals

摘要

With the advancement in the navigation system, the demand raised for the advancement in modulation scheme as well. With so many researches, the concept of binary offset carrier modulation comes out. The irony of BOC modulation is that it comes with two different variants Sine BOC modulation and Cosine BOC modulation. This brings a question to the mind that when should we use these schemes? This paper aims to specify the differences between these two variants of BOC modulation by analyzing them over their spectral characteristics for different orders of BOC modulated signals which are traditionally used in the Civil Navigation and are still in use in many navigation systems. All the BOC variants taken here are the actual ones used in navigation systems.