期刊文献+

一种突发模式下GMSK信号相干解调的方法 被引量:2

Coherent Demodulation of GMSK Signal in Burst Mode
下载PDF
导出
摘要 GMSK信号是一种连续相位调制方式,由于它具有较好的功率效率和频谱利用率,因此在无线通信领域得到广泛的应用。在此给出一种适合于数字化处理的突发GMSK调制信号的相干解调方式,利用基于FFT的载波频偏及符号时钟误差联合估计算法,实现前导字检测以及频偏和符号定时误差的估计和补偿。采用基于匹配滤波的前向位同步技术实现位同步,对存在残留频偏误差情况下该相干解调系统的解调性能进行了计算机仿真分析。仿真和实验表明,该解调方法具有良好的误码性能。 The coherent demodulation of GMSK modulation signal in burst mode which is fit for digital processing is presented. Based on the FFT algorithm of joint symbol timing error and frequency offset estimation, the detection of the preamble is completed and the symbol timing error and frequency offset are compensated. The technique is adopted based on the match filtering to realize the bit synchronization. The performance of the coherent demodulation system with residual frequency offset was also simulated. The results of the simulation and the test show that the performances of the demodulation system are all right.
作者 张建军
出处 《现代电子技术》 2010年第20期157-159,共3页 Modern Electronics Technique
关键词 突发模式 高斯滤波最小频移键控 快速傅里叶变换 相干解调 burst mode GMSK FFT coherent demodulation
  • 相关文献

参考文献9

二级参考文献21

  • 1王峻,朱志燕,张建军.基于延迟自相关特性的码速率测量技术[J].电讯技术,2004,44(5):97-101. 被引量:2
  • 2雷厉.无线电通信侦察的发展探讨[J].电讯技术,1995,35(6):62-67. 被引量:2
  • 3K. Murota and K. Hirade. GMSK Modulation for Digital Mobile Radio Telephony. IEEE Trans. Comm., 1981.7,29(7) : 1044~1050.
  • 4Y.L. Huang, K.D. Fan and C.C. Huang.A fully Digital Noncoherent and Coherent GMSK Receiver Architecture with Joint Symbol Timing Error and Frequency Offset Estimation. IEEE Trans. Veh. Technol. ,2000.5,49:863 ~ 874.
  • 5Hen- Wei Tao, Tung- Sen Cheng. Synchronization of TFM Signal Using Coatas Loop. Int. J. Electronics, 1983.55(3):365 ~ 375.
  • 6Riccardo De Gaudenzi, Tobias Garde, and Vieri Vaaghi.Performance Analysis of Decision- Directed Maximum-Likehood Phase Estimators for M- PSK Modulated Signals. IEEE Trans.Comm., 1995.12,43(12) :3090 ~ 3099.
  • 7Oreste Andrisano, Marco Chiani. The first nyquist criterion applied to coherent receiver design for generalized MSK signals [J]. IEEE Trans Commun, 1994-02-03-04, 42: 449-457.
  • 8Gardner F M. Interpolation in digital modems-Part I: Fundamentals [J]. IEEE Trans Commun, 1993-03, 41:502-508 .
  • 9Lars Erup, F M Gardner, Robert A. Interpolation in digital modems-Part II: Implementation and performance [J]. IEEE Trans Commun, 1993-06, 41: 998-1008.
  • 10Fonseka J P. Non-coherent detection with Viterbi decoding for GMSK signals [J]. IEEE Proc Commun, 1996-12, 143(6).

共引文献38

同被引文献11

引证文献2

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部