Main Article Content
The complex envelope or baseband-equivalent representation
of passband functions is a well-developed theory, known
to provide an elegant and, in most cases, an eased mathematical
tractability to the analyzes of signals and systems. Although
this theory is covered extensively in many textbooks, there are
hidden concepts and applications of it, mainly related to the fast
simulation of communication systems and to the fundamentals
for developing software-defined radios. This tutorial uncovers
these concepts using a differentiated didactic approach, aiming at
contributing to the understanding about how to model, simulate
and implement complex envelope modems.
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).