Asymptotic and Finite User PER Analysis of Successive Interference Cancellation for DS-CDMA
Josep Sala-Álvarez, Javier Villares, Francesc Rey Micolau · IEEE Communications Letters · 2011
An expression is derived for the average Packet Error Rate (PER) of a Successive Interference Canceller (SIC) for DS-CDMA when the number of users asymptotically tends to infinity. The asymptotic probability density function of the interference power is governed by a Fokker-Planck differential equation with drift and (asymptotically vanishing) diffusion depending on the PER function of the adopted forward error correcting code (FEC). In addition to the asymptotic solution for the PER, a particle-based algorithm is also developed for computing efficiently the PER in the finite user case.