Random Access Protocols With Collision Resolution in a Noncoherent Setting

Utkovski, Zoran and Eftimov, Tome and Popovski, Petar (2015) Random Access Protocols With Collision Resolution in a Noncoherent Setting. Wireless Communications Letters, IEEE, 4 (4). pp. 445-448. ISSN 2162-2337

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Abstract

Wireless systems are increasingly used for machine-type communication (MTC), where the users sporadically send very short messages. In such a setting, the overhead imposed by channel estimation is substantial, thereby demanding noncoherent communication. In this letter, we consider a noncoherent setup in which users randomly access the medium to send very short messages to a common receiver. We propose a transmission scheme based on Gabor frames, where each user has a dedicated codebook of M possible codewords, while the codebook simultaneously serves as an ID for the user. The scheme is used as a basis for a simple protocol for collision resolution.

Item Type: Article
Uncontrolled Keywords: access protocols;channel estimation;electronic messaging;radio receivers;Gabor frame;channel estimation;codebook;codeword;collision resolution;machine type communication;noncoherent communication;random access protocols;receiver;short message sending;transmission scheme;wireless system;Channel estimation;Decoding;Encoding;Fading;Noise;Receivers;Sparks;Collision resolution;machine-type communication;noncoherent communication;random access
Subjects: Engineering and Technology > Electrical engineering, electronic engineering, information engineering
Divisions: Faculty of Electrical Engineering
Depositing User: Zoran Utkovski
Date Deposited: 11 Nov 2015 11:29
Last Modified: 11 Nov 2015 11:29
URI: http://eprints.ugd.edu.mk/id/eprint/14209

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