A low-density parity-check codes LDPC based hybrid multiuser detection method for DS-UWB system

被引：0

作者：

Yin, Zhendong ^{[1
]}

Liu, Xiaohui ^{[1
]}

Chen, Meihang ^{[1
]}

Wu, Zhilu ^{[1
]}

机构：

[1] School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin

来源：

Information Technology Journal | 2013年 / 12卷 / 11期

关键词：

Code mapping; DS-UWB; LDPC; Multiuser detection;

D O I：

10.3923/itj.2013.2225.2230

中图分类号：

学科分类号：

摘要：

With the development of ultra wideband (UWB) technologies, the multiple access UWB system has been a hot research topic. In this article, an efficient multiuser detector based on Low-Density Parity-Check Codes (LDPC) codes is proposed for direct-sequence ultra-wideband systems in Inter-satellite communication. To implement the hybrid receiver, code mapping and K-means clustering proposed by the author to further eliminate the multiuser interference and provide better detection performance. LDPC codes can achieve performance approaching the Shannon limit when decoded using an iterative probabilistic algorithm. In addition to their simple descriptions of code structure and fully parallelizable decoding implementations, such codes have attracted much attention particularly in the field of coding theory. Simulation results show the proposed new hybrid multiuser receiver possesses better detection performance. © 2013 Asian Network for Scientific Information.

引用

页码：2225 / 2230

页数：5

共 13 条

[1]

Ahmed Q.Z., Yang L., Reduced-rank adaptive multiuser detection in hybrid direct-sequence time-hopping ultrawide bandwidth systems, IEEE Trans. Wireless Communic, 9, pp. 156-167, (2010)

[2]

Biradar G.S., Merchant S.N., Desai U.B., Performance of constrained blind adaptive DS-CDMA UWB multiuser detector in multipath channel with narrowband interference, Proceedings of the International Conference on Global Telecommunications, pp. 1-5, (2008)

[3]

Kanungo T., Mount D.M., Netanyahu N.S., Piatko C.D., Silverman R., Wu A.Y., An efficient k-means clustering algorithms: Analysis and implementation, IEEE Transactions on Pattern Analysis and Machine Intelligence, 24, 7, pp. 881-892, (2002)

[4]

Oppermann I., Hamalainen M., Iinatti J., UWB: Theory and Applications, (2005)

[5]

Sorokine V., Kschischang F.R., Pasupathy S., Gallager codes for CDMA applications: Part I (2000), IEEE Trans. Commun., 48, pp. 1660-1668, (2000)

[6]

Tanner R.M., A recursive approach to low complexity codes, IEEE Transactions on Information Theory, IT-27, 5, pp. 533-547, (1981)

[7]

Verdu S., Minimum probability of error for asynchronous gaussian multiple-access channels, IEEE Transactions on Information Theory, IT-32, 1, pp. 85-96, (1986)

[8]

Wang C., Ma M., Ying R., Yang Y., Narrowband interference mitigation in DS-UWB systems, IEEE Signal Proc. Lett., 17, pp. 429-432, (2010)

[9]

Wu Z., Zong Z., Yin Z., Chen X., Joint multiuser detection of CD and AFSA in DS-UWB communication systems, Inform. Technol. J., 10, pp. 422-427, (2011)

[10]

Yang L.Q., Giannakis G.B., Ultra-wideband communications: An idea whose time has come, IEEE Signal Process. Maga., 21, pp. 26-54, (2004)

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