FIELD: radio communication. SUBSTANCE: in device detecting nonorthogonal noise in communication system with code-division multiple access compressor compresses multiple channel signals, given channel included, with the use of orthogonal code assigned to this channel in which same second symbol is repeated at least twice in the course of preset duration of first symbol to generate compressed repeated symbols. Generator of signal of difference between second symbol received at given moment and second symbol received before receives compressed second symbols. Noise detector converts difference signal to value of signal of nonorthogonal noise. EFFECT: measurement in receiving unit of component of nonorthogonal noise included in mix of signal sent by transmitter in communication system with code- division multiple access. 19 cl, 10 dwg
