Analytical Characterization of ITLinQ:
Channel Allocation for Device-to-Device
R. K. Mungara, X. Zhang, A. Lozano, and R. W. Heath, Jr.
submitted to IEEE Transactions on Wireless Communications
Device-to-device (D2D) communication allows serving local wireless traffic bypassing the systemÕs
infrastructure. One way to control the interference in D2D networks is to carefully channelize
transmissions. This paper presents an analytical characterization of ITLinQ, one of the principal D2D
channelization schemes proposed to date. Recognizing that it captures well the spatial characteristics
of D2D networks, a stochastic geometry setting is utilized for this analysis. The derived expressions
enable gleaning insights on how ITLinQ avoids situations of excessive interference, and they facilitate
optimizing the controllable parameters of ITLinQ so as to maximize the system spectral efficiency
(bits/s/Hz per unit area). With the parameters thus optimized, the ultimate performance of ITLinQ can
be evaluated with respect to other D2D channel allocation schemes. In particular, performance evaluation
comparisons with the FlashLinQ scheme are provided, and the gains with respect to an unchannelized
network are quantified.