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一種用于DVB-C的全數(shù)字QAM解調(diào)器結(jié)構(gòu)

林銀芳,  鄧洋,  趙民建,  王匡

林銀芳, 鄧洋, 趙民建, 王匡. 一種用于DVB-C的全數(shù)字QAM解調(diào)器結(jié)構(gòu)[J]. 電子與信息學(xué)報(bào), 2003, 25(6): 855-860.
引用本文: 林銀芳, 鄧洋, 趙民建, 王匡. 一種用于DVB-C的全數(shù)字QAM解調(diào)器結(jié)構(gòu)[J]. 電子與信息學(xué)報(bào), 2003, 25(6): 855-860.
Lin Yinfang, Deng Yang, Zhao Minjian, Wang Kuang. An architecture of an all-digitized QAM receiver applicable for DVB-C[J]. Journal of Electronics & Information Technology, 2003, 25(6): 855-860.
Citation: Lin Yinfang, Deng Yang, Zhao Minjian, Wang Kuang. An architecture of an all-digitized QAM receiver applicable for DVB-C[J]. Journal of Electronics & Information Technology, 2003, 25(6): 855-860.

一種用于DVB-C的全數(shù)字QAM解調(diào)器結(jié)構(gòu)

An architecture of an all-digitized QAM receiver applicable for DVB-C

  • 摘要: 該文提出了一種適用于數(shù)字有線電視的全數(shù)字QAM解調(diào)器結(jié)構(gòu)，對(duì)解調(diào)器的載波恢復(fù)、符號(hào)同步、自動(dòng)增益控制和自適應(yīng)均衡等進(jìn)行研究分析，通過仿真給出了相應(yīng)的參數(shù)，最后給出整個(gè)解調(diào)器在AWGN信道條件下的誤碼性能，從仿具結(jié)果可以看出，該文提出的解調(diào)器具有較好的性能,且易于全數(shù)字實(shí)現(xiàn)。
    Abstract: An architecture of an all-digitized QAM receiver applicable for digital video broad-casting for cable television is proposed in this paper. The digital implementation of the QAM demodulator, including carrier recovery, symbol synchronization, automatic gain control and adaptive equalization is discussed. Loop parameters of the receiver are investigated via simula-tion. Finally, bit error rate of the receiver under AWGN channel is shown. Simulation results demonstrate that the receiver has a good performance, and is easy to implement digitally.
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  • D.A. Bryan, QAM for terrestrial and cable transmission, IEEE Trans. on Consumer Electronics,1995, 41(8), 383-391.[2]G. Karam, I. Jeanclaude, H. Sari, A reduced-complexity frequency detector derived from the maximum-likelihood principle, IEEE Trans. on Comm., 1995, 43(10), 2641-2650.[3]H. Sari, S. Moridi, New phase and frequency detectors for carrier recovery in PSK and QAM systems, IEEE Trans. on Comm., 1988, 36(9), 1035-1043.[4]傅海陽(yáng),SDH數(shù)字微波傳輸系統(tǒng),北京,人民郵電出版社,1998年8月,304-309.[5]F.M. Gardner, Interpolation in digital modems-Part I: Fundamentals, IEEE Trans. on Comm.,1993, 41(3), 502-508.[6]L. Erup, F. M. Gardner, R. A. Harris, Interpolation in digital modems-Part II: Implementation and performance, IEEE Trans. on Comm., 1993 , 41(6), 998-1008.[7]F.M. Gardner, A BPSK/QPSK timing-error detector for sampled receivers, IEEE Trans. on Comm., 1986, COM-34(3), 423-429.[8]J.G. Proakis, Digital Communications, Third Edition, Publishing House of Electronics Industry,1998, 9,648-650.
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出版歷程
  • 收稿日期:  2001-11-08
  • 修回日期:  2002-05-13
  • 刊出日期:  2003-06-19

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