Single carrier frequency domain equalization method based on time domain adaptive threshold noise reduction

• Main Authors: YUAN WEIHAO, ZHAO SHIDUO, LI XUEJIAO, MENG HAO, HUANG ZHEMING, LIU JIAYU, LI XUEKUN, ZHANG XIAOZHE, WANG JIANGTAO, CHEN BAOWEN
• Format: Patent
• Language: Chinese; English
• Published: 27.09.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a single carrier frequency domain equalization method based on time domain adaptive threshold noise reduction in the field of single carrier communication. The method comprises the steps of frequency domain channel estimation, time domain channel impulse response estimation acquisition, multi-channel parallel threshold noise reduction, multi-channel parallel frequency domain equalization, multi-channel equalization result error value calculation, error size comparison and multi-channel equalization result gating output. The method can overcome the defects that in traditional time domain noise reduction single carrier frequency domain equalization, the noise reduction effect of a fixed threshold value is poor, and the threshold value is difficult to set, and can automatically select a proper time domain noise reduction threshold value on the premise of not increasing extra signal overhead, so that the symbol accuracy after equalization is improved, and the bit error rate after equaliza