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基于频域二值块通序列的TDS-OFDM发射分集 被引量：1

TDS-OFDM transmit diversity scheme based on binary partial block pass sequences
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摘要 在数字电视地面广播中,为了消除时域同步正交频分复用(TDS-OFDM)技术在发射分集应用中的相互干扰,提出了频域二值块通序列的设计方法。该序列频域块状连续、正交、自相关性良好,且具有零互相关特性,可以很好地满足TDS-OFDM发射分集系统对时域快速同步和相互干扰消除的要求。分析了用该发射分集系统结构和信道估计算法。仿真结果表明:和传统的单天线低密度校验编码(LDPC)系统相比,该发射分集系统在慢衰落信道下可以获得1～3 dB的分集增益。 A design method for digital television terrestrial broadcasting was developed for binary partial block pass （BPBP） sequences to eliminate mutual interference using training sequences for time-domain synchronous orthogonal frequency division multiplexing （TDS-OFDM） systems with transmit diversity. The BPBP sequences are block consecutive, orthogonal in the frequency domain, and have good autocorrelation and zero cross correlation properties. The TDS OFDM transmit diversity padded by BPBP sequences as guard intervals provides fast synchronization in the time domain and eliminates mutual interference. The scheme and the corresponding channel estimation method are given in detail. Simulations with low density parity check （LDPC） coding show that the scheme can obtain 1 - 3 dB gains compared with single input single output （SISO） systems over slow fading channels.
作者 杜邓宝 王劲涛 王军 杨知行
机构地区 清华大学电子工程系
出处 《清华大学学报（自然科学版）》 EI CAS CSCD 北大核心 2009年第10期1642-1645,1650,共5页 Journal of Tsinghua University(Science and Technology)
基金 国家“八六三”高技术项目
关键词 数字电视地面广播 频域二值块通序列 时域同步正交频分复用 发射分集 digital television terrestrial broadcasting binary partial block pass sequence TDS-OFDM transmit diversity
分类号 TN911.25 [电子电信—通信与信息系统]
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参考文献10

  • 1Varela M, Sanchez M, Lukama L, et al. Spatial diversity analysis for digital TV systems [J]. IEEE Trans on Broadcasting, 2001, 47(3): 198- 206.
  • 2Corre Y, Fluerasu A, Hamman E, et al. Result of a measurement campaign of DVB-T signals with an indoor two antennas diversity receiver, postCOST 273 TD(05) 099 [R]. Lisbon, Portugal: UEI, ENSTA, 2005.
  • 3GB20600-2006.数字电视地面广播系统帧结构、信道编码和调制[s].中国:国家标准化管理委员会(SAC),2006.
  • 4SONG Jian, YANG Zhixing, YANG Lin, et al. Technical review on Chinese digital terrestrial television broadcasting standard and measurements on some working modes [J]. IEEE Trans on Broadcasting, 2007, 53(1) : 1 - 7.
  • 5WANG Jintao, YANG Zhixing, PAN Changyong, et al. Design of space-time-frequency transmitter diversity seheme for TDS-OFDM system [J]. IEEE Trans on Consumer Electronics, 2005, 51(3): 759-764.
  • 6Sarwate D. Bounds on crosscorrealtion and autocorrelation of sequences [J]. IEEE Trans on Information Theory, 1979, 25(6) : 720 - 724.
  • 7DU Dengbao, WANG Jintao, GONG Ke, et al. A transmit diversity scheme for TDS-OFDM system [J]. IEEE Trans on Broadcasting, 2008, 54(3) : 482 - 488.
  • 8ZENG Yonghong, Ng Sang Tung. Pilot cyclic prefixed single carrier communication: Channel estimation and equalization [J]. IEEE Signal Processing Letters, 2005, 12(1): 56-59.
  • 9A|amouti S. A simple transmit diversity technique for wireless communications [J]. IEEE J on Select Areas in Communications, 1998, 16(8) : 1451 - 1458.
  • 10WANG Jun, YANG Zhixing, PAN Changyong, et al. Iterative padding subtraction of the PN sequence for the TDS-OFDM over broadcast channels [J]. IEEE Trans on Consumer Electronics, 2005, 51(4): 1148- 1152.

共引文献3

同被引文献11

  • 1Edfors O, Sandell M, Beek J, et al. OFDM channel estimation by singular value decomposition [J]. IEEE Trans on Commnications, 1998, 46(7): 931-939.
  • 2Yang B, Cao Z G, Letaief K. Analysis of low complexity windowed DFT based MMSE channel estimator for OFDM systems [J]. IEEE Trans on Communications, 2001, 49(11) : 1977 - 1987.
  • 3Pun M, Morelli M, Kuo C. Maximum-likelihood synchronization and channel estimation for OFDMA uplink transmissions [J]. IEEE Trans on communications, 2006, 54(4) : 726 - 736.
  • 4ZhANG Shichang, WANG Jun, LI Shaoqian. A channel estimation method for NC-OFDM systems in cognitive radio context [C]// Proc of IEEE ICCS. Krak6w, Poland: IEEE Press, 2008: 208-212.
  • 5Hayashi K, Sakai H. Uplink channel estimation for OFDMA system [C]// Proc of IEEE ICASSP. Hawaii, USA: 1EEE Press, 20071 III 285-III 288.
  • 6Raghavendra M, Giridhar K. Improving channel estimation in OFDM for sparse multipath channels [J]. IEEE Signal Processing Letters, 2005, 12(1): 52-55.
  • 7Carbonelli C, Vedantam S, Mitra U. Sparse channel estimation with zero tap detection [C]// proc of ICC. Paris, France: IEEE Press, 2004: 3173-3177.
  • 8Cotter S, Rao D. Sparse channel estimation via matching pursuit with application to equalization[J]. IEEE Trans on Communications, 2002, 50(3) : 374 - 377.
  • 9Bajwa W, Haupt J, Sayeed A, et al. Compressed channel sensing: a new approach to estimating sparse multipath channels [J]. Proceedings of the IEEE, 2010, 98(6) : 1058 - 1076.
  • 10Orfanidis S. Introduction to Signal Processing [M]. Englewood Cliffs, NJ: Prentice Hall, 1996.

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清华大学学报（自然科学版）
2009年 第10期

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