NDLI: Wireless four-way relaying using physical layer network coding with nested lattices

Content Provider	IEEE Xplore Digital Library
Author	Huaping Liu de Carvalho, E. Popovski, P. Yuping Zhao
Copyright Year	2013
Description	Author affiliation: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China (Huaping Liu; Yuping Zhao) \|\| Dept. of Electron. Syst., Aalborg Univ., Aalborg, Denmark (de Carvalho, E.; Popovski, P.)
Abstract	Two-way relaying in wireless systems has initiated a large research effort during the past few years. In particular, structured codes and lattices are instrumental for achieving high rates when using Physical Layer Network Coding (PLNC). In an attempt to bring the gains of PLNC beyond the classical traffic pattern of two-way relaying, in this paper we consider a scenario with four-way relaying, where each of the two Mobile Stations (MSs) has a two-way connection to the same Base Station (BS), while each connection is through a dedicated Relay Station (RS). The two RSs are in the range of the BS, but they are at antipodal positions within the cell and do not interfere with each other, i. e. achieve a perfect spatial reuse. We introduce communication schemes for serving the four communication flows in two transmission phases. Each phase consists of combined broadcast and multiple access. The main design ingredients are dirty paper coding nested lattice code codes. We compare the performance with a reference scheme that utilizes Decode-and-Forward (DF). The results show that the usage of structured codes in the four-way relaying scenario can significantly increase the achievable rate region.
Starting Page	3297
Ending Page	3301
File Size	655760
Page Count	5
File Format	PDF
ISBN	9781467331227
ISSN	15503607
DOI	10.1109/ICC.2013.6655054
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-09
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Lattices Decoding Encoding Noise Interference Relays Downlink
Content Type	Text
Resource Type	Article

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