000143402 001__ 143402
000143402 005__ 20190812205351.0
000143402 020__ $$a978-1-4244-4312-3 000143402 02470$$2ISI$$a000280141401064 000143402 037__$$aCONF
000143402 245__ $$aAchieving Linear Scaling with Interference Alignment 000143402 269__$$a2009
000143402 260__ $$bIeee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa$$c2009
000143402 336__ $$aConference Papers 000143402 520__$$aRecent results have shown that interference alignment can achieve K/2 degrees of freedom in a K-user interference channel with time or frequency varying channel coefficients. For fixed number of users K, the number of degrees of freedom characterizes the asymptotic behavior of the performance in the high SNR limit but it does not answer the question of how the performance scales with K for any fixed SNR. In particular, it is unclear if a constant rate per user can be maintained as more users enter into the system. In this paper, we investigate the performance of the interference alignment scheme for fixed SNR. We assume that the channel coefficients between the users are of the form r e^{j\theta} where r is fixed over the duration of communication and theta is a fast fading phase. We show that for any value of the SNR and K, the aggregate rate achieved by the interference alignment scheme is lower bounded by c_1 K log(1+c_2 SNR) where c_1 and c_2 are positive constants independent of both SNR and K. This result establishes the linear scaling of the interference alignment scheme for the considered random phase channel model.
000143402 6531_ $$aInterference Alignment 000143402 6531_$$aLinear Scaling
000143402 6531_ $$aWireless Networks 000143402 6531_$$aScaling Laws
000143402 700__ $$0241934$$g168198$$aÖzgür, Ayfer 000143402 700__$$aTse, David
000143402 7112_ $$dJune 28-July 3, 2009$$cSeoul, Korea$$aIEEE International Symposium on Information Theory 000143402 773__$$t2009 Ieee International Symposium On Information Theory, Vols 1- 4$$q1754-1758 000143402 8564_$$zn/a$$yn/a$$uhttps://infoscience.epfl.ch/record/143402/files/isit2009_final.pdf$$s184418 000143402 909C0$$xU11353$$pARNI$$0252185
000143402 909CO $$qGLOBAL_SET$$pconf$$ooai:infoscience.tind.io:143402 000143402 917Z8$$x168198
000143402 937__ $$aARNI-CONF-2010-001 000143402 973__$$rREVIEWED$$sPUBLISHED$$aEPFL
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