Title :
Non-linear optimization scheme for non-orthogonal multiuser access
Author :
Lyashev, Vladimir ; Maksimov, Mikhail ; Merezhin, Nikolai
Abstract :
This paper is described intra-cell interference in case of multiuser access based on single-carrier frequency division multiple access signals (SC-FDMA), which is used in LTE networks for uplink control channel and virtual multiple-input multiple-output (V-MIMO) mode. It is shown the reason of intra-cell interference and performance degradation. Also it is discussed a gradient based solution for user alignment to minimize the interference.
Keywords :
Long Term Evolution; MIMO communication; cellular radio; frequency division multiple access; interference suppression; multiuser channels; nonlinear programming; radiofrequency interference; wireless channels; LTE network; SC-FDMA signal; V-MIMO mode; intracell interference minimization; nonlinear optimization scheme; nonorthogonal multiuser access; single carrier frequency division multiple access; uplink control channel; virtual multiple input multiple output mode; Antennas; Computational efficiency; Convergence; Interference; Optimization; Synchronization; Uplink; Gauss-Newton; LTE; SC-FDMA; SIR; interference; mitigation; optimization;
Conference_Titel :
Telecommunications Forum Telfor (TELFOR), 2014 22nd
Conference_Location :
Belgrade
Print_ISBN :
978-1-4799-6190-0
DOI :
10.1109/TELFOR.2014.7034476
