Patent ID: 8718180
Filing Date: 2014-05-06
Classification: H04B,H04L

Abstract:
1. A method of processing information prior to emission thereof on a multi-antenna emission, comprising precoding said information and scaling said precoded information prior to emission thereof, the precoding comprising applying a perturbation to said information before transmission, said perturbation being expressible as a perturbation vector, wherein said perturbation vector is selected by defining a first lattice representing possible identities of information to be sent, defining a reduced lattice from said first lattice, selecting a first candidate perturbation vector from said reduced lattice, selecting further candidate perturbation vectors from said reduced lattice, transforming said candidate perturbation vectors from expression in said reduced lattice into expression in said first lattice to obtain transformed candidate identities, selecting one of said transformed candidate identities as perturbation to be applied, and said scaling comprising scaling said information after perturbation on the basis of a transmitted power constraint, wherein said selecting of one of said transformed candidate identities is performed on the basis of a scaling factor employed in said scaling.