Thermal-Aware Channel with Multiple Wires

Abstract

The thermal-aware channel has been studied recently to control the temperature of some electronic devices for better performance and longer lifetime. In this work, we consider a thermal-aware channel model where multiple wires are available to the user. The user can use one wire or several wires to write an information word. Particularly, we study the two extreme cases. In the first case, only one wire is permitted for writing the information. The other extreme case is that we are allowed to write information on all the wires in parallel. In the first case, when we send a message through a wire that reaches the highest allowed temperature, we switch to another available wire. We determine the minimum number of wires required to send any arbitrary message. Given the number of wires, our second task is to determine the constrained codewords that can be sent through these wires. We compute the maximum information rate achieved and provide some constructions of codes satisfying these constraints. In the second case when all the wires are available for writing many, interesting questions arise and we briefly describe one of them and its solutions.