On network coding and modulation mapping for three-phase bidirectional relaying
Type
Conference PaperDate
2015-12-03Online Publication Date
2015-12-03Print Publication Date
2015-08Permanent link to this record
http://hdl.handle.net/10754/621325
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© 2015 IEEE. In this paper, we consider the network coding (NC) enabled three-phase protocol for information exchange between two users in a wireless two-way (bidirectional) relay network. Modulo-based (nonbinary) and XOR-based (binary) NC schemes are considered as information mixture schemes at the relay while all transmissions adopt pulse amplitude modulation (PAM). We first obtain the optimal constellation mapping at the relay that maximizes the decoding performance at the users for each NC scheme. Then, we compare the two NC schemes, each in conjunction with the optimal constellation mapping at the relay, in different conditions. Our results demonstrate that, in the low SNR regime, binary NC outperforms nonbinary NC with 4-PAM, while they have mixed performance with 8-PAM. This observation applies to quadrature amplitude modulation (QAM) composed of two parallel PAMs.Citation
Chang RY, Lin S-J, Chung W-H (2015) On network coding and modulation mapping for three-phase bidirectional relaying. 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC). Available: http://dx.doi.org/10.1109/PIMRC.2015.7343293.Conference/Event name
26th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications, PIMRC 2015ae974a485f413a2113503eed53cd6c53
10.1109/PIMRC.2015.7343293