How to estimate achievable rate for each UE in LTE?

If gamma is the average signal-to-noise ratio (SNR) experienced by UE, the average rate per unit bandwidth is estimated as log2(1 + gamma) [1][2][3].
In fact, it is a simplified air interface model where the achievable rate for each UE is estimated according to the average channel state information (CSI) of its link.


References
[1] D. De Vleeschauwer, H. Viswanathan, A. Beck, S. Benno, G. Li, and R. Miller, “Optimization of HTTP adaptive streaming over mobile cellular networks,” in Proc. IEEE INFOCOM, 2013, pp. 898–997.
[2] A. E. Essaili, D. Schroeder, D. Staehle, M. Shehada, W. Kellerer, and E. Steinbach, “Quality-of-experience driven adaptive HTTP media delivery,” in Proc. IEEE Int. Conf. on Commun. (ICC), Budapest, Hungary, Jun 2013.
[3] Cicalo, Sergio, et al. "Improving QoE and Fairness in HTTP Adaptive Streaming over LTE Network." (2015).