Starting with the first sentence: "In conclusion, communication systems play a vital role in modern society, and understanding the concepts of analog and digital communication systems is essential for designing and implementing efficient communication systems."
Next, "communication systems" is a proper noun part here, so I need to skip the words within the book title. Wait, the book's title is in quotes and should be skipped. So "communication systems" in the title should stay as is, but elsewhere in the text, like "communication systems play a vital role", those are general terms and need alternatives. So "communication systems" could be "information networks", "transmission methods", or "data transfer systems". communication systems analog and digital sanjay sharma pdf
Next sentence:
"However, digital communication systems also have some limitations:" but elsewhere in the text