I am currently working on a research paper in Computer Science which involves quite a few math equations. I am using MS Word currently to write the paper. I haven’t yet included the equations. I am planning to send it to a journal.

I have a previously published paper in IEEE Digital Xplore for which I used LibreOffice Writer in Ubuntu to specify the equations and the content. I thought it wouldn’t matter what platform I used because I would later convert the document into PDF format. But in the actual paper available on the website, the equations all look pixelated and downright illegible.

http://ieeexplore.ieee.org/document/7518940/

My question is, what is the standard way of specifying equations for a research paper? Should I convert the whole document to LaTex and specify equations there? If so, should I look up on the particular journal format to use before including the content?