Patent ID: 6690712
Filing Date: 2004-02-10
Classification: H04B,H04J

Abstract:
A transmitter of a UTRAN (UMTS Terrestrial Radio Access Network) having at least four antennas in a mobile communication system, comprising:a first adder connected to a first antenna, for adding a first spread signal produced by spreading a first symbol pattern with a first orthogonal code and a second spread signal produced by spreading the first symbol pattern with a second orthogonal code orthogonal to the first orthogonal code; a second adder connected to a second antenna, for adding the first spread signal and a third spread signal produced by spreading a first inverted symbol pattern resulting from inverting the phase of the first symbol pattern with the second orthogonal code; a third adder connected to a third antenna, for adding a fourth spread signal produced by spreading a second symbol pattern orthogonal to the first symbol pattern with the first orthogonal code and a fifth spread signal produced by spreading the second symbol pattern with the second orthogonal code; and a fourth adder connected to a fourth antenna, for adding the fourth spread signal and a sixth spread signal produced by spreading a second inverted symbol pattern resulting from inverting the phase of the second symbol pattern with the second orthogonal code.