© The Institution of Engineering and Technology
A full-duplex wireless communications system is considered where K user wants to exchange common messages and private messages via a relay with multiple antennas simultaneously. The proposed scheme combines signal space alignment with zero forcing during multiple access channel phase and broadcast channel phase to cancel self-interference. The authors can achieve high degree of freedom by using successive network coding and aligning multiple interfering signals. The result is extended to a more generalised Y channel circumstance where they can transfer each message with different interference-free streams.
References
-
-
1)
-
2. Wang, Y., Li, H.: ‘Transmission scheme for a K-way relay multiple-input multiple-output channel’, IET Commun., 2012, 6, (15), pp. 2442–2447 (doi: 10.1049/iet-com.2011.0616).
-
2)
-
9. Lee, K., Lee, N., Lee, I.: ‘Achievable degrees of freedom on K-user Y channels’, IEEE Trans. Wirel. Commun., 2012, 11, (3), pp. 1210–1219 (doi: 10.1109/TWC.2012.012712.111194).
-
3)
-
1. Jeon, Y., Kim, Y.T., Park, M.: ‘Opportunistic scheduling for multi-user two-way relay systems with physical network coding’, IEEE Trans. Wirel. Commun., 2012, 11, (4), pp. 1290–1294 (doi: 10.1109/TWC.2012.021412.111189).
-
4)
-
8. Lee, K., Lee, N., Lee, I.: ‘Achievable degree of freedom on K-user Y channels with heterogeneous messages’, IEEE Commun. Lett., 2013, 17, (2), pp. 333–336 (doi: 10.1109/LCOMM.2012.120612.122344).
-
5)
-
3. Chung, H., Lee, N., Shim, B.: ‘On the beamforming design for MIMO multipair two-way relay channels’, IEEE Trans. Veh. Technol., 2012, 61, (7), pp. 3301–3306 (doi: 10.1109/TVT.2012.2203619).
-
6)
-
7. Lee, N., Heath, R.W.: ‘Degrees of freedom of completely-connected multi-way interference networks’. Proc. Int. Conf. IEEE ISIT, July 2013, pp. 1571–1575.
-
7)
-
N. Lee ,
J.B. Lim
.
Degrees of the freedom of the MIMO Y channel: signal space alignment for network coding.
IEEE Trans. Inf. Theory
,
7 ,
3332 -
3342
-
8)
-
6. Hagenauer, J.H.: ‘Iterative network and channel decoding for the two-way relay channel’. Proc. Int. Conf. IEEE Commun., June 2006, pp. 1568–1573.
-
9)
-
5. Lee, K., Lee, N., Lee, I.: ‘Feasibility conditions of signal space alignment for network coding on K-user MIMO Y channels’. Proc. Int. Conf. IEEE ICC, June 2011, pp. 1–5.
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-com.2014.0058
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