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�������պ����ѧѧ�� 2009, Vol. 35 Issue (1) :5-8    DOI:
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Ī ��, �� ��, �� ��, �����*
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Low complexity sequence detection algorithm for time-frequency overlapped multiplexing system
Mo Yong, Wang Jing, Liu Dong, Li Daoben,*
School of Information and Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China

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ժҪ ����ʱƵ�ص��ź�(Overlapped Hybrid-Division Multiplexing, OVHDM)ʵ�ָ�Ƶ��Ч�����ݴ���,�������ڶ��ƽ���Ʒ���.������OVHDM�ź�ģ���Լ���Ѽ���㷨.Ϊ�˽��ͼ��ĸ��Ӷ�,�����������������������м���㷨——SIC-SE:�����������ĸ����ز�������,�����м��ǰ����ͨ�����ڿ��پ���������޳弤��Ӧ�˲���.���㷨�ļ�⸴�Ӷ�Զ���������Ȼ����㷨,�������ڴ�ͳ������������㷨.�������,���ڸü���㷨�ı���OVHDMϵͳ��������ʹ����ͬ�ŵ������QAM-OFDMϵͳ.
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Abstract�� Overlapped hybrid-division multiplexing(OVHDM) can achieve high spectrum efficiency, and the performance is superior to multi-level modulation. The system model and the optimum detection were studied. The joint soft interference cancellation and sequence estimation algorithm, SIC-SE, was proposed to reduce the detection complexity. The sub carrier data stream of OVHDM signals was first separated by soft interference cancellation, then filtered by finite impulse response (FIR) filter based on fast matrix inversion, and finally detected with sequence estimation. The complexity of proposed algorithm is much lower than maximum likelihood (ML) detection, while the performance is better than conventional SIC algorithm. Simulation results show that the performance of coded OVHDM system is better than the same coded QAM-OFDM system.
Keywords�� signal detection   overlapped multiplexing   maximum likelihood   iterative methods     
Received 2008-01-15;


About author: Ī ��(1981-),��,�Ĵ��㰲��,��ʿ��,myknobby@gmail.com.
Ī ��, �� ��, �� ��, �����.ʱƵ�ص�����ϵͳ�ĵ͸��Ӷ����м���㷨[J]  �������պ����ѧѧ��, 2009,V35(1): 5-8
Mo Yong, Wang Jing, Liu Dong, Li Daoben, .Low complexity sequence detection algorithm for time-frequency overlapped multiplexing system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(1): 5-8
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