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�������պ����ѧѧ�� 2011, Vol. 37 Issue (11) :1400-1403,1409    DOI:
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����LDPC�뷽����ս��������ϵͳ
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Tactical data link system with low-density parity-check code scheme
Li Hang, Chen Wei*
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� In information warfare, military combat capability can be improved by tactical data link system of which coding is one of crucial techniques of the transmission reliability. A new type of tactical data link system was proposed employing low-density parity-check (LDPC) code scheme, which is a new set of codes for communication systems demanding intensive reliability. The sum-product algorithm of the LDPC code scheme was introduced and the transmission model was described. Then the link performance of the system within the fix frequency over additive white Gaussian noise (AWGN) channel was analyzed. Simulation results with Monte-Carlo method show that the LDPC code scheme can decrease the bit error rate of the tactical data link system effectively. The results also showe that the LDPC-coded data link system achieves better performance than joint tactical information distribution system (JTIDS), which employe Reed Solomon codes as channel coding scheme, over AWGN channel and Rayleigh fading channel. LDPC codes, serving as the alternative codes for channel coding technique, provide possible solutions to enhance the transmission reliability of tactical data link system.
Keywords�� low-density parity-check(LDPC)   tactical data link   channel coding   joint tactical information distribution system (JTIDS)     
Received 2010-07-14;
About author: �� ��(1985-),��,�ӱ��е���,˶ʿ��,david_lihang@ee.buaa.edu.cn.
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�, ���.����LDPC�뷽����ս��������ϵͳ[J]  �������պ����ѧѧ��, 2011,V37(11): 1400-1403,1409
Li Hang, Chen Wei.Tactical data link system with low-density parity-check code scheme[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(11): 1400-1403,1409
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