Adaptive beamforming apparatus in ETSI system

摘要

The invention European Telecommunication Standardization (European Telecommunications Standard Institute: ETSI) in the system, especially the ETSI system and wideband (Wideband) removing by the interference effect of increasing system capacity in a direction opposite to the CDMA type next generation mobile communication system and antenna diversity adaptation relates to a beam forming apparatus of the ETSI system so suitable for a city a full effect. The adaptive beam forming apparatus of the ETSI system, such has a plurality of antennas to form a beam for a particular communication other-end party of the communications channel in a CDMA mobile communication system is divided into data channels and control channels, it is received in the control channel first coefficient calculating section, and a temporary received signal of the data channel with signals received on the data channel a first adaptive beamformer coefficients output from the first coefficient calculating section as an input to calculate a signal to obtain a first adaptive beamformer coefficients a first beam forming unit, and a first and a temporary signal determined by detecting the beam formation section output signal to obtain a temporary decision value of the received signal of a data channel portion, the signal and determine the temporary signal received by the data channel for output to the and the second coefficient operation to obtain the second adaptive beamformer coefficients compared to the temporary decision value is negative, the number in the data channel Calculating a second adaptive beamformer coefficients to the signal output from the second coefficient operation and comprises a second beam forming and outputting a reception signal of the data channel.