Reduced-state decoding in two-way relay networks with physical-layer network coding

Physical-layer network coding: Tutorial, survey, and beyond

“…according to (36). We fix the target rate From Table 4, we see that in the high SNR regime (i.e., the high rate regime),…”

Improved joint turbo decoding and physical-layer network coding

“…It can be interpreted as a softening operation applied to the binary XOR values. It should be mentioned that this cannot be implemented in the reduced trellis adopted in [4], [5]. Our simulation results show that this approach achieves a good performance, even in the presence of Rayleigh fading channels.…”

“…Our simulation results show that this approach achieves a good performance, even in the presence of Rayleigh fading channels. Considerable gains are obtained in comparison with [4], [5], albeit at the expense of a more complex encoder/decoder. This additional complexity, however, is still manageable.…”

“…Contrasting with [4], [5], we propose the joint use of PNC with a turbo decoder based on a complete trellis where the relay computes the XOR of the messages sent by the sources 2012 IEEE Information Theory Workshop 978-1-4673-0223-4/12/$31.00 ©2012 IEEE directly from the superimposed signals. For a better performance of the turbo decoder, we explore the idea originally applied to LDPC codes in [6] in our proposed turbo decoding.…”

“…Recently, in [4], [5], the authors used turbo codes integrated to PNC over both AWGN and Rayleigh fading channels. It is reported that, in their turbo decoder, the two data messages (associated with the two users) at the relay are first recovered individually, and then the XOR is formed.…”