For in-depth study, you might look for textbooks or technical guides that cover these topics in detail. Some popular textbooks on wireless communication include:
Many engineers compile "awesome wireless" lists that include links to free e-books and PDF guides. Search GitHub for "wireless communication ebook." Wireless Communication From The Ground Up Pdf
Unlike traditional textbooks (e.g., Rappaport or Goldsmith) that start with modulation, this resource typically begins with: For in-depth study, you might look for textbooks