Verfahren und System für mehrfachen Zugriff auf drahtlose zellulare OFDM-Systeme unter Berücksichtigung von Raum und Frequenzbereichen

Details

Veröffentlichungs-Nr.

EP2806576

Aktenzeichen

EP13382186

Anmeldetag

21. Mai 2013

Veröffentlichung

24. Juli 2019

Erteilung

24. Juli 2019

Rechtsraum

EP

IPC

H04B7/06

Abstract

The method comprising a base station equipped with a large number of antennas according to a two-dimensional rectangular array and a number M of cell users, said rectangular array comprising N 1 antenna elements along one axis with a regular spacing d x and N 2 antenna elements along a perpendicular axis with a regular spacing d y , said users being characterized by angles ( ¸ , Õ ) in a spherical coordinate system, where in order to achieve orthogonal multiple access the method comprises: selecting a grid spacing ( u , v ) in the (u, v) domain; discretizing the (u, v) domain; constructing a set of signals S T [ k,l,f ]; calculating time-domain excitations A T [ n,m,t ] for the antenna elements in the array given by coordinates ( nd x ,md y ) for generation of the downlink transmit signals; and obtaining the frequency contents S R [ k,l,f ] of the complex baseband signals received from the M users in the uplink. The system implements the method of the invention.

Anmelder

Firma

Telefonica S.A.

Land

🇪🇸 Spanien

Fachgebiete