Physical-Layer Network Coding with Non-Binary Channel Codes

Physical-layer or wireless network coding combines the principles of packet combining [1] and multi-user detection. In this paper, we consider the symmetrical two-way relay channel, in which two users exchange information via a relay. Soon after the invention of network coding, it has been recognized that additional gains are possible by considering the received information on signal level [2]. The application of channel coding and the joint consideration of network and channel coding brought further improvements [3], [4]. In the following, we extend these schemes to include non-binary channel coding with joint decoding and decoding for linear combinations [5]–[6][7].Grant numbers : This work was supported by the European Commission in the framework of the FP7 Network of Excellence in Wireless COMmunications NEWCOM# (Grant agreement no. 318306) and by the Catalan and Spanish Governments under SGR (2009SGR1046).© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works