APPARATUSES AND METHODOLOGIES FOR DECISION FEEDBACK EQUALIZATION USING PARTICLE SWARM OPTIMIZATION

摘要

Methods and apparatuses are provided for channel equalization in a communication system. The method includes initializing, using processing circuitry, filter coefficients of an adaptive decision feedback equalizer randomly in a predetermined search space. Further, the method includes updating, using the processing circuitry, the filter coefficients. The filter coefficients are updated using a least mean square recursion when the filter coefficients are stagnant. The filter coefficients are updated using a particle swarm optimization procedure when the filter coefficients are not stagnant. Further, the updating step is repeated until a predetermined stopping criteria is met. Further, the method includes, filtering, using the processing circuitry, a received signal using the filter coefficients.

主权项

1. A method for channel equalization in a communication system, the method comprising:
initializing, using processing circuitry, filter coefficients of an adaptive decision feedback equalizer randomly in a predetermined search space; updating, using the processing circuitry, the filter coefficients, wherein in response to determining that the filter coefficients are stagnant, the filter coefficients are updated using a least mean square recursion, and wherein in response to determining that the filter coefficients are not stagnant, the filter coefficients are updated using a particle swarm optimization procedure; repeating the updating step until a predetermined stopping criteria is met; and filtering, using the processing circuitry, a received signal based on the filter coefficients.