Abstract
Two-way relaying in wireless systems has initiated a large research effort during the past few years. Nevertheless, it represents only a specific traffic pattern and it is of interest to investigate other traffic patterns where such a simultaneous processing of information flows can bring performance advantage.
In this paper we consider a \emph{four-way relaying} scenario, 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 RSs are placed in such a way that one RS and the terminals
associated with it do not interfere with the other RS, and vice versa.
We introduce and analyze a two-phase transmission scheme to serve the four-way traffic pattern defined in this scenario. Each phase consists of combined broadcast and multiple access. We analyze the achievable rate region of the new scheme for Decode-and-Forward (DF) operational model for the RS. We compare the performance with a state-of-the-art reference scheme, based on two-way relaying with DF. The results indicate that the achievable rate regions are significantly enlarged for the new scheme.
In this paper we consider a \emph{four-way relaying} scenario, 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 RSs are placed in such a way that one RS and the terminals
associated with it do not interfere with the other RS, and vice versa.
We introduce and analyze a two-phase transmission scheme to serve the four-way traffic pattern defined in this scenario. Each phase consists of combined broadcast and multiple access. We analyze the achievable rate region of the new scheme for Decode-and-Forward (DF) operational model for the RS. We compare the performance with a state-of-the-art reference scheme, based on two-way relaying with DF. The results indicate that the achievable rate regions are significantly enlarged for the new scheme.
Original language | English |
---|---|
Journal | IEEE Wireless Communications Letters |
Volume | 2 |
Issue number | 4 |
Pages (from-to) | 403 - 406 |
Number of pages | 3 |
ISSN | 2162-2337 |
DOIs | |
Publication status | Published - Aug 2013 |