Abstract: Disclosed is a weight vector computing unit using a symbol-rate, a chip-rate and/or a mixed-rate in a Smart Antenna System. The weight vector computing unit is useful in a wireless communication network having a reverse pilot channel. Further, by using such the weight vector computing unit, high-speed broadband communications are available in a smart antenna system. In such 3-G wireless communications where both traffic signals and pilot signals are transmitted from a terminal, the weight vector computing unit calculates optimized weight vectors using the pilot signal and the calculated weight vectors are adapted to each traffic signal. The weight vector computing unit is configured to receive the received signal and/or the integrated signal in order to produce a weight vector for beamforming without any training signal.

Abstract: The present invention relates to a finger using symbol-rate weighting in Smart Antenna System, and an apparatus and method for Demodulating signals using such a finger. The present invention is useful in a wireless communication network having a reverse pilot channel. Further, by using such a finger, the present invention provides a demodulation apparatus and method for making high-speed broadband communications available in a smart antenna system. In such 3-G wireless communications where both traffic signals and pilot signals are transmitted from a terminal, the present invention calculates optimized weight vectors using the pilot signal and the calculated weight vectors are adapted to each traffic signal with a symbol-rate weight.

Abstract: A signal processing method is for use in an array antenna system included in a Code Division Access (CDMA) mobile telecommunications network base station. The signal processing method includes initializing a weight vector and a snapshot index; obtaining a gradient of output power of an array antenna to a phase of each of the antennas in the array antenna system at every snapshot and determining whether an adaptive gain is added or subtracted depending on the signature of the gradient to update the phase of each antenna; and determining a weight value for each of the antennas to apply the weight value to a signal received at the corresponding one of the antennas.

Abstract: A signal processing method and apparatus for obtaining a diversity gain in the communication system equipping the antenna array when a background noise is a space white noise or a non white noise is disclosed. The signal processing method and apparatus includes steps and functions of calculating a covariance matrix, estimating at least two time invariance vectors by performing an eigen-disintegration operation, estimating a channel vector and outputting a beam-forming vector. The present invention can improve the performance of the antenna array by using at least two time invariance vectors and it also increase a communication quality and quantity of the communication system, if the present invention is implemented to the wireless communication system.

Abstract: A signal processing method and apparatus for obtaining a diversity gain in the communication system equipping the antenna array when a background noise is a space white noise or a non white noise is disclosed. The signal processing method and apparatus includes steps and functions of calculating a covariance matrix, estimating at least two time invariance vectors by performing an eigen-disintegration operation, estimating a channel vector and outputting a beam-forming vector. The present invention can improve the performance of the antenna array by using at least two time invariance vectors and it also increase a communication quality and quantity of the communication system, if the present invention is implemented to the wireless communication system.

Abstract: This invention relates to a signal processing method and apparatus for an adaptive array antenna. The objective is to suggest an adaptive procedure of computing the suboptimal weight vector for an array antenna system that provides a beampattern having its maximum gain along the direction of the mobile target signal source in a blind signal environment, where the transmitted data are not known (or not to be estimated) at the receiver. It is the ultimate goal of this invention to suggest a practical way of enhancing both the communication quality and communication capacity through the optimal weight vector of the array system that maximizes SINR(Signal to Interference+Noise Ratio).

Abstract: The present invention is a signal processing method for use in a CDMA adaptive array antenna system, the method for forming the beam pattern by maximizing a transceiving gain in a direction toward a target mobile station and optimizing the beam pattern in a moving direction depended on a moving direction of each target mobile station during signal transceiving between a base station and the mobile station, the method forming an ideal beam pattern by a simplified computation procedure, and a computer readable recording medium for storing a program for implementing the method. The method comprises determining signature of gradient of output power of the array antenna to the phase of each antenna, updating the phase of each antenna by increasing or decreasing the phase by an adaptive gain depending on the signature of the corresponding gradient, determining weight corresponding to the updated phase, and applying the weight to a signal arrived at each antenna.

Abstract: This invention provides a signal processing method for enhancing the communication quality and increasing the communication capacity by reducing the effects of interference and noises with the nice beam pattern. The signal processing method provides a beam pattern by computing an eigenvector corresponding to the maximum eigenvalue of an autocorrelation matrix of received signals in an antenna array system. The inventive signal processing method introduces a simplified computational technique for generating a nice beam pattern having its maximum gain along the direction of the wanted signal and maintaining the gain toward the direction of the interfering signals in as low a level as possible.