I read two papers which uses Instantaneous SINR (ISINR) as criterion for performance evaluation. In the two papers below, it seems the desired signal (numerator) in ISINR does not involve transmit power; ISINR is directly written as {h^2 * d^{-\alpha}}, where h is channel coefficient and d is distance.
Can anyone explain what the definition of ISINR is? Thanks!
[1] Ali K S, Haenggi M, ElSawy H, et al. Downlink non-orthogonal multiple access (NOMA) in Poisson networks[J]. IEEE Transactions on Communications, 2018, 67(2): 1613-1628.
[2] Liang Y, Li X, Haenggi M. Non-orthogonal multiple access (NOMA) in uplink poisson cellular networks with power control[J]. IEEE Transactions on Communications, 2019, 67(11): 8021-8036.
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