CHANNEL EQUALIZATION/CARRIER RECOVERY SYSTEM IN RECEIVER FOR HOME PNA AND METHOD FOR THE SAME

摘要

PURPOSE: A channel equalization/carrier recovery system in a receiver for home PNA(Phone line Networking Alliance) and a method for the same are provided to equalize stably a received symbol signal regardless of different modulation methods within one frame by improving a structure of the channel equalization/carrier recovery system. CONSTITUTION: A channel equalization/carrier recovery system in a receiver for home PNA includes an FD-QAM(Frequency Diverse Quadrature Amplitude Modulation) equalizer(410) and a QAM equalizer(450). The FD-QAM equalizer(410) is used for calculating FD-QAM tap coefficients and equalizing an FD-QAM signal by using the FD-QAM tap coefficients. The QAM equalizer(450) is used for receiving the FD-QAM signal during a predetermined header block to calculate QAM tap coefficients. In addition, the QAM equalizer(450) equalizes a QAM signal by updating the FD-QAM tap coefficients when receiving the QAM signal in a predetermined payload block. The FD-QAM equalizer(410) and the QAM equalizer(450) updates the FD-QAM tap coefficients and the QAM tap coefficients by using an LMS(Least Mean Square) algorithm.