Apparatus and method for receiving signals in a mobile communication system using adaptive antenna array technology

A method for receiving a signal in a base station including at least one reception antenna, the method comprising the steps of:

• receiving a reception signal and despreading the reception signal;
• calculating an error value representative of a difference between the reception signal and a desired reception signal using a combined technique of a first technique and a second technique by receiving the despread signal;
• calculating a reception beam weight step value using the error value and an output signal generated by applying a previous reception beam weight to the despread signal;
• calculating a difference between the previous reception beam weight and a product of the reception beam weight step value, the despread signal, and a conjugate value of the error value, as a current reception beam weight;
• generating the reception beam using the despread signal and the reception beam weight;
• and
• generating the output signal by applying the reception beam to the despread signal.

A method for receiving a signal in a base station including at least one reception antenna, the method comprising the steps of:

• calculating an error value representative of a difference between a reception signal and a desired reception signal using a combined technique of a first technique and a second technique by receiving the reception signal;
• calculating a reception beam weight step value using the error value and an output signal generated by applying a previous reception beam weight to the reception signal;
• calculating a difference between the previous reception beam weight and a product of the reception beam weight step value, the reception signal and a conjugate value of the error value, as a current reception beam weight;
• generating the reception beam using the reception signal and the reception beam weight;
• and
• generating the output signal by applying the reception beam to the reception signal.

A method for generating an optimal reception beam weight such that a reception beam becomes an optimal reception beam in a direction of a reception signal, in a base station including at least one reception antenna, the base station generating a reception beam of the reception antenna using a previous reception beam weight and a despread signal of a current reception signal, calculating an error value indicating a difference between the current reception signal and a desired reception signal, and calculating a current reception beam weight using the previous reception beam weight, the despread signal, and the error value, the method comprising the steps of:

• generating a reception beam weight step value using the error value and an output signal generated by applying the reception beam weight to the despread signal;
• calculating a difference between the previous reception beam weight and a product of the reception beam weight step value, the despread signal, and a conjugate value of the error value, as the current reception beam weight;
• and
• selecting the reception beam weight step value such that the current reception beam weight becomes the optimal reception beam.

A method for generating an optimal reception beam weight such that a reception beam becomes an optimal reception beam in a direction of a reception signal, in a base station including at least one reception antenna, the base station generating a reception beam of the reception antenna using a previous reception beam weight and a current reception signal, calculating an error value indicating a difference between the current reception signal and a desired reception signal, and calculating a current reception beam weight using the previous reception beam weight, the current reception signal, and the error value, the method comprising the steps of:

• generating a reception beam weight step value using the error value and an output signal generated by applying the reception beam weight to the reception signal;
• calculating a difference between the previous reception beam weight and a product of the reception beam weight step value, the reception signal, and a conjugate value of the error value, as the current reception beam weight;
• and
• selecting the reception beam weight step value such that the current reception beam weight becomes the optimal reception beam.