Patent ID: 8948232
Filing Date: 2015-02-03
Classification: H03M,H04B,H04L

Abstract:
1. A method for transmitting a digital signal intended for a Multiple Access Relay Channel (MARC) system with at least four nodes comprising two senders, a relay and a receiver separated from one another by non-orthogonal links except between the relay and the receiver, between which the link is orthogonal, implementing a spatially distributed network code, the method comprising: a step of coding, in each sender, delivering a code word per block of K information bits, a step of sending, in the senders, the code word during αN transmission intervals, αε[0,1], a step of iterative joint detection/decoding, in the relay, so as to separate interfering streams originating from the senders and determine per stream a vector representative of the K information bits associated with the code word, a step of joint coding, in the relay, of the two vectors so as to determine redundancy information, and a scheduling in the relay so as to send the redundancy information during the (1−α)N following transmission intervals, wherein N denotes the total number of channel uses, and wherein the step of iterative joint detection/decoding and implements a soft decoding and the step of joint coding implements a soft coding with marginalization preformed at a bit level.