Abstract: In an embodiment of the method, at least one signal-to-interference-and-noise ratio (SINR) for each antenna configuration in a set of transmission antenna configurations is determined based on an estimated channel characteristic. At least one received signal characteristic is determined for each antenna configuration in the set of antenna configurations based on the determined signal-to-interference-and-noise ratios. One of the antenna configurations in the set of antenna configurations is selected based on the determined received signal characteristics.

Abstract: The method of receiver processing of CDMA signals in a CDMA system includes first converting a received signal in the time domain to a received signal in the frequency domain, and equalizing the received signal in the frequency domain using a set of frequency domain weights. The equalized received signal in the frequency domain is converted to an equalized received signal in the time domain. The set of frequency domain weights are adaptively adjusted at a symbol rate of the received signal in the time domain based on an error signal produced from the received signal in the frequency domain and a frequency domain representation of a known pilot signal of the CDMA system.

Abstract: In an embodiment of the method, at least one signal-to-interference-and-noise ratio (SINR) for each antenna configuration in a set of transmission antenna configurations is determined based on an estimated channel characteristic. At least one received signal characteristic is determined for each antenna configuration in the set of antenna configurations based on the determined signal-to-interference-and-noise ratios. One of the antenna configurations in the set of antenna configurations is selected based on the determined received signal characteristics.

Abstract: A receiver device for use in a wireless communication system (20) includes a rake receiver (32) and an equalizer receiver (34). A controller (36) selects one of the rake receiver (32) or the equalizer receiver (34) for processing a received signal. In some situations, the rake receiver (32) will provide better performance. In other situations, the equalizer receiver (34) will provide better performance. One embodiment includes a plurality of equalizers (34A, 34B). One of the equalizers processes a data packet from a received signal while another one of the equalizers trains for processing a signal from a subsequent scheduled user. Another example embodiment includes controlling an equalizer length based on a delay span or another selected channel metric.

Abstract: The method of receiver processing of CDMA signals in a CDMA system includes first converting a received signal in the time domain to a received signal in the frequency domain, and equalizing the received signal in the frequency domain using a set of frequency domain weights. The equalized received signal in the frequency domain is converted to an equalized received signal in the time domain. The set of frequency domain weights are adaptively adjusted at a symbol rate of the received signal in the time domain based on an error signal produced from the received signal in the frequency domain and a frequency domain representation of a known pilot signal of the CDMA system.

Abstract: In the method and apparatus for receiver processing of CDMA signals, linear equalization of at least one received signal is followed by non-linear symbol estimation of each symbol stream in the received signal. An approximation of the original received signal formed from the estimated symbol streams is then filtered. The output from this filtering is combined with output from filtering of the received signal to produce the receiver processed received signal.

Abstract: The interference detection and characterization system of this invention supports modern communication systems which have to contend with a variety of intentional and unintentional interference souces. As an add-on to existing communications equipment, the invention employs novel signal processing techniques to automatically detect the presence of communications channel irregularities in near real-time and alert the attending operator. Information provided to the operator through a user-friendly interface is used to characterize the type of interference and its degree of severity. Once characterized, the information is used by the operator to take corrective actions including the activation of alternative communication plans or, in some instances, mitigation of the interference. Since output from the system of this invention lends itself well to expert system and neural network environments, such systems could be employed to further aid the operator.