Compressed Sensing Based Multi-User Detection with Modified Sphere Detection in Machine-to-Machine Communications

Conference: SCC 2015 - 10th International ITG Conference on Systems, Communications and Coding
02/02/2015 - 02/05/2015 at Hamburg, Germany

Proceedings: ITG-Fb 254: 10th International ITG Conference on Systems, Communications and Coding (SCC 2015)

Pages: 6Language: englishTyp: PDF

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Authors:
Ji, Yalei; Bockelmann, Carsten; Dekorsy, Armin (Department of Communications Engineering, Otto-Hahn-Alle 1, University of Bremen, 28359 Bremen, Germany)

Abstract:
Recently, Compressed Sensing has been proposed as a promising physical layer technique for Multi-User Detection in Massive Machine Communication (MMC). MMC is characterized by low data rates, low control signaling overhead and different traffic models compared to human-oriented communication. In this context, Compressed Sensing based Multi-User Detection (CS-MUD) enables efficient direct random access as a potential solution for the massive access problem. Previous work has not considered realistic traffic characteristic. In this work, we consider a typical Poisson traffic model to formulate a MAP detection problem exploiting user sparsity.