Method and device for eliminating time-domain narrowband interference of direct sequence spread spectrum communication system

• Main Authors: ZHOU CHAO, MENG YUN, LIU YANG, WU YUCHENG, WANG BO, HUANG WENQUN, SHA SHIWEI, ZHANG HUI, ZHOU QIANG, WANG JU, LI YANG, DUAN XIAOHUI, WU DAN
• Format: Patent
• Language: Chinese; English
• Published: 16.12.2009
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a method for eliminating time-domain narrowband interference of a direct sequence spread spectrum communication system, which comprises the following steps of: 1) dividing received spread spectrum signals into two paths of same signals, wherein one path of signals are delayed and then output to an interference estimating module, and the other path of signals are taken as reference signals; 2) estimating interference signals in the first path of the spread spectrum signals by a transverse filter with unequal interval taps through a time-domain arithmetic, and outputting the interference signals; and 3) subtracting the interference signals from the reference signals, and obtaining the spread spectrum signals of which the narrowband interference is eliminated. In addition, the invention also provides a device for eliminating the time-domain narrowband interference of the direct sequence spread spectrum communication system. The method and the device have the advantages of little computatio