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An interference alignment (IA) scheme for interference channels was recently proposed to achieve the maximum degrees of freedom (DoF). Although most studies of IA focus on network throughput, that is, DoF, reliability in terms of diversity order is also an important performance measure. In this study, interference cancellation (IC) scheme based on Alamouti code in the multi-access scenario is applied to the K-user, multi-input–multi-output (MIMO) interference channel. This IC scheme gives the benefit of diversity order and requires no channel-state-information at the transmitters (CSIT). However, it requires more receive antennas than the IA scheme to achieve the same DoF. In order to reduce the number of receive antennas, especially for the three-user MIMO interference channel, an IA-and-cancellation (IAC) scheme based on Alamouti code is proposed. It keeps the same DoF as the IC scheme, but requires partial CSIT. It is analytically shown that the IC and IAC schemes enable symbol-by-symbol decoding and achieve diversity order of two, while the conventional IA scheme achieves diversity order of one.
References
-
-
1)
-
M.A. Maddah ,
A.S. Motahari
.
Communication over MIMO X channels: interference alignment, decomposition, and performance analysis.
IEEE Trans. Inf. Theory
,
8 ,
3457 -
3470
-
2)
-
5. Jafar, S.A., Fakhereddin, M.J.: ‘Degrees of freedom for the MIMO interference channel’, IEEE Trans. Inf. Theory, 2007, 53, (7), pp. 2637–2642 (doi: 10.1109/TIT.2007.899557).
-
3)
-
S. Jafar ,
S. Shamai
.
Degree of freedom region for the MIMO X channel.
IEEE Trans. Inf. Theory
,
1 ,
151 -
170
-
4)
-
V.R. Cadambe ,
S.A. Jafar
.
Interference alignment and the degrees of freedom for the K-user interference channel.
IEEE Trans. Inf. Theory
,
8 ,
3425 -
3441
-
5)
-
10. Gomadam, K., Cadambe, V.R., Jafar, S.A.: ‘A distributed numerical approach to interference alignment and applications to wireless interference networks’, IEEE Trans. Inf. Theory, 2011, 57, (6), pp. 3309–3322 (doi: 10.1109/TIT.2011.2142270).
-
6)
-
2. Peng, J., Hong, J., Xue, K.: ‘Performance analysis of switching strategy in LTE-A heterogeneous networks’, J. Commun. Netw., 2013, 15, (3), pp. 292–300 (doi: 10.1109/JCN.2013.000052).
-
7)
-
8)
-
11. Al-Dhahir, N., Calderbank, A.R.: ‘Further results on interference cancellation and space-time block codes’. Proc. 35th Asilomar Conf. Signals, Systems, Comput., Pacific Grove, CA, USA, November 2001, pp. 257–262.
-
9)
-
16. Jafar, S.: ‘Blind interference alignment’, IEEE J. Sel. Top. Signal Process., 2012, 6, (3), pp. 216–227 (doi: 10.1109/JSTSP.2012.2187877).
-
10)
-
R.K. Mallik
.
On multivariate Rayleigh and exponentials distributions.
IEEE Trans. Inf. Theory
,
6 ,
1499 -
1515
-
11)
-
B. Hassibi ,
B.M. Hochwald
.
High-rate codes that are linear in space and time.
IEEE Trans. Inf. Theory
,
1804 -
1824
-
12)
-
3. Yetis, C.M., Gou, T., Jafar, S.A., Kayran, A.: ‘On feasibility of interference alignment in MIMO interference networks’, IEEE Trans. Signal Process., 2010, 58, (9), pp. 4771–4782 (doi: 10.1109/TSP.2010.2050480).
-
13)
-
14. Li, L., Jafarkhani, H., Jafar, S.A.: ‘When Alamouti codes meet interference alignment: Transmission schemes for two-user X channel’. Proc. IEEE Int. Symp. Inf. Theory (ISIT), Saint Petersburg, Russia, August 2011, pp. 2577–2581.
-
14)
-
18. Choi, J.: ‘Interference alignment over lattices for MIMO interference channels’, IEEE Commun. Lett., 2011, 15, (4), pp. 3425–3441.
-
15)
-
10. Naguib, A.F., Seshadri, N., Calderbank, A.R.: ‘Applications of space-time block codes and interference suppression for high capacity and high data rate wireless systems’. Proc. 32nd Asilomar Conf. Signals, Systems, Comput., Pacific Grove, CA, USA, November 1998, pp. 1803–1810.
-
16)
-
20. Kazemitabar, J., Jafarkhani, H.: ‘Multiuser interference cancellation and detection for users with more than two transmit antennas’, IEEE Trans. Commun., 2008, 56, (4), pp. 574–583 (doi: 10.1109/TCOMM.2008.060217).
-
17)
-
S.M. Alamouti
.
A simple transmitter diversity scheme for wireless communications.
IEEE J. Sel. Areas Commun.
,
8 ,
1451 -
1458
-
18)
-
13. Ning, H., Ling, C., Leung, K.K.: ‘Feasibility condition for interference alignment with diversity’, IEEE Trans. Inf. Theory, 2011, 57, (5), pp. 2902–2912 (doi: 10.1109/TIT.2011.2120390).
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