LTE-advanced and 4G wireless communications [Guest Editorial]

The goal of this feature topic is to give a comprehensive system-level overview of the LTE-A standard, which includes not only the description of how various new techniques work, but also the rationales and motivation behind how technical decisions were made during the Release-10 standardization process. Our hope is that this will motivate interested researchers to explore and propose newer ideas for enhancements in future LTE-A releases as well as the next-generation wireless systems.