BLIND SIGNAL SEPARATION USING SPREADING CODES.

摘要

A communications device for separating source signals provided by M signal sourcesincludes an antenna array comprising N antenna elements for receiving at leastN different summations of the M source signals. A code despreader is connectedto the N antenna elements for decoding the at least N different summations of theM source signals. Each one of the N different summations includes k codes for providingk different summations of the M source signals associated therewith. A blindsignal separation processor forms a mixing matrix comprising at least kN differentsummations of the M source signals, and separates desired source signals fromthe mixing matrix. The mixing matrix has a rank equal up to kN.