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Identifier

000423008

Title

Linear coding for the gaussian multiple access channel that achieves sum capacity

Alternative Title

Γραμμική κωδικοποίηση για το κανάλι πολλαπλών προσβάσεων που επιτυγχάνει την αθροιστική χωρητικότητα

Author

Παπουτσιδάκης, Ιωάννης-Θεμιστοκλής Δ.

Thesis advisor

Δημητρόπουλος, Ξενοφώντας

Reviewer

Καρυστινός, Γεώργιος
Τσακαλίδης, Παναγιώτης

Abstract

Multiple Access Channel (MAC) is a simple model for noisy many-to-one communication that is found in several applications, such as the uplink of a cellular system or medium access in a local area network. In this work we consider the practical aspects of the implementation of a Gaussian MAC. Specifically, we present several known results and techniques that are used on multiple access scenarios. The potential of uniform discrete inputs on a multi terminal environment with Gaussian noise is demonstrated. We give proof about the optimality of these inputs in terms of sum rate and highlight the duality between this problem and the optimal point-to-point transmission over a Gaussian channel using linear coding. The second part of this thesis is concerned with the construction of channel codes that achieve the rates that are previously produced. Encoding and decoding algorithms are analytically presented and experimental results are simulated.

Language

English

Subject

Channel coding

Information theory

Θεωρία πληροφορίας

Κωδικοποίηση καναλιού

Issue date

2018-11-23

Collection

School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses

Type of Work--Post-graduate theses

Views

382

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