Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Satellite communications (SatComs) have recently entered a period of renewed interest motivated by technological advances and nurtured through private investment and ventures. The present survey aims ...

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The Christmas tree is a wonderful and historic tradition that we don our homes with every Christmas to fill us with spirit and to lay our gifts underneath. However, it is the birth of our Lord and ...