טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentEliron Amir
SubjectMultiple Access Channels with Correlated Sources and
Cribbing Encoders
DepartmentDepartment of Electrical Engineering
Supervisor Full Professor Steinberg Yossef
Full Thesis textFull thesis text - English Version


Abstract

In this work we study problems of joint source-channel coding for the multiple access channel with cribbing encoders. These problems are motivated by modern communication scenarios such as an uplink channel for cellular users. Provided that the users are close enough to each other, they can causally crib to the output signals of their neighbors, thus obtaining some measure of cooperation. Three scenarios are considered in this work: (i) a model where encoder 2 cribs strictly causally at the output of encoder 1, (ii) the model where encoder 2 cribs causally or non causally at the output of encoder 1, and (iii) the model where encoder 1 cribs strictly causally at the output of encoder 2, and encoder 2 cribs causally at the output of encoder 1. For model (i), sufficient conditions are derived for lossless transmission of a correlated pair source (U, V) via the multiple access channel (MAC). For the other scenarios (ii) and (iii), necessary and sufficient conditions are derived, for transmissibility of the pair source via the MAC. For these cases, (ii) and (iii), we allow distortion in one of the source components.