全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

级联编码MIMO系统的迭代检测算法

DOI: 10.3969/j.issn.1006-7043.201311094

Keywords: 多输入多输出, 级联码, 联合检测译码, 低密度奇偶校验码, BM算法, 反馈, 迭代检测算法

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对BCH-LDPC级联编码的MIMO系统,提出一种外码译码反馈联合迭代检测译码算法.该算法在迭代检测译码结构的基础上,引入外码硬判决译码反馈.MIMO检测器利用反馈的硬判决信息,经过映射处理后用于更新检测器的检测列表,以减小迭代检测译码算法的运算量.同时,利用外码译码结果直接计算部分LDPC码译码初始信息,提高软信息的可靠性,从而提高系统性能.仿真结果表明,与迭代检测译码算法相比,所提算法能够使处理一帧数据时的平均检测次数减少57.1%,从而降低算法运算量.同时由于外码译码反馈的引入,所提算法至少能够获得0.2 dB性能增益.

References

[1]  FOSCHINI G J, GANS M J. On limits of wireless communications in a fading environment when using multiple antennas [J]. Wireless Personal Communications, 1998, 6(3): 311-335.
[2]  PAULRAJ A J, GORE D A, NABAR R U, et al. An overview of MIMO communications-a key to gigabit wireless [J]. Proceedings of the IEEE, 2004, 92(2): 198-217.
[3]  LI Q, LI G, LEE W, et al. MIMO techniques in WiMAX and LTE: a feature overview [J]. IEEE Communications Magazine, 2010, 48(5): 86-92.
[4]  VARGAS D, GOZALVEZ D, GOMEZ-BARQUERO D, et al. MIMO for DVB-NGH, the next generation mobile TV broadcasting [J]. IEEE Communications Magazine, 2013, 51(7): 130-137.
[5]  ARAPOGLOU P D, LIOLIS K, BERTINELLI M, et al. MIMO over satellite: a review [J]. IEEE Communications Surveys and Tutorials, 2011, 13(1): 27-51.
[6]  WOLNIANSKY P W, FOSCHINI G J, GOLDEN G D, et al. V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel[C]//Proceedings of the 1998 URSI International Symposium on Signals, Systems, and Electronics. Pisa: IEEE, 1998: 295-300.
[7]  HAYKIN S, SELLATHURAI M, DE JONG Y, et al. Turbo-MIMO for wireless communications [J]. IEEE Communications Magazine, 2004, 42(10): 48-53.
[8]  YLIOINAS J, JUNTTI M. Iterative joint detection, decoding, and channel estimation in turbo-coded MIMO-OFDM [J]. IEEE Transactions on Vehicular Technology, 2009, 58(4): 1784-1796.
[9]  YANG D W, LIN J S, FANG S H, et al. High-performance turbo-MIMO system design with iterative soft-detection and decoding[C]// Proceedings of Asia-Pacific Signal and Information Processing Association Annual Summit and Conference. Las Angeles: IEEE, 2012: 1-4.
[10]  LU B, YUE G, WANG X. Performance analysis and design optimization of LDPC-coded MIMO OFDM systems [J]. IEEE Transactions on Signal Processing, 2004, 52(2): 348-361.
[11]  MITSUYAMA K, KAMBARA K, NAKAGAWA T, et al. Performance evaluation of iterative LDPC-coded MIMO OFDM system with time interleaving [J]. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2010, 93(12): 2654-2662.
[12]  LI B, HUANG J, ZHOU S, et al. MIMO-OFDM for high-rate underwater acoustic communications [J]. IEEE Journal of Oceanic Engineering, 2009, 34(4): 634-644.
[13]  MOON S, KO W S, VARGAS D, et al. Enhanced spatial multiplexing for rate-2 MIMO of DVB-NGH system[C]//Proceedings of International Conference on Telecommunications. Jounieh: IEEE, 2012: 1-5.
[14]  LIU T H. Two efficient and stable MMSE detection algorithms for the V-BLAST system [J]. International Journal of Communication Systems, 2013, 26(2): 236-249.
[15]  FITZPATRICK P, JENNINGS S M. Comparison of two algorithms for decoding alternant codes [J]. Applicable Algebra in Engineering, Communication and Computing, 1998, 9(3): 211-220.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133