基于频偏估计算法研究
摘要
载波频率偏移是光通信系统中一种常见的损伤,常用数据辅助估计算法和非数据辅助估计算法进行频偏估计并补偿。两类算法可以均在时域或者频域进行估计。基于M次幂周期图盲估计是一种较为成熟的应用算法,经过改进可以应用在高阶调制格式。为降低频偏估计的计算量可以使用多级频偏估计算法,可以在不损失估计精度的前提下大大降低频偏估计的实现复杂度。通过仿真与实验,验证了多种频偏估计算法的正确性和有效性以及多级频偏估计的实用性。
作者
赵宝
张亮
黄健
ZHAO Bao;ZHANG Liang;HUANG Jian
出处
《信息技术与信息化》
2023年第12期25-28,共4页
Information Technology and Informatization
二级参考文献12
-
1Abatzoglou T J.Fast maximum likelihood joint estimation o- ffrequency and frequency rate[J].IEEE Transactions on A- erospace and Electronic Systems,1986,AES-22(6):708- 715.
-
2Kay S.A fast and accurate single frequency estimator[J].I- EEE Transactions on Acoustics,Speech and Signal Proce- ssing,1989,37(12): 1987-1989.
-
3Lovell B C,Williamson R C.The statistical performance of some instantaneous frequency cstimators[J].IEEE Transa- ctions on Signal Processing, 1992,40(7): 1708-1723.
-
4Fitz M P.Planar filtered techniques for burst mode carrier synchronization[A].In:Global Telecommunications Confe- rence,1991.GLOBECOM'91.'Countdown to the New Mill- ennium.Featuring a Mini-Theme on:Personal Communic- ations Services[C].IEEE, 1991:365-369.
-
5Luise M,Reggiannini R.Carrier frequency recovery in all- digital modems for burst-mode transmissions[J].IEEE Tr- ansactions on Communications,1995,43(2/3/4):1169-1178.
-
6Mengali U,Morelli M.Data-aided frequency estimation for burst digital transmission[J].IEEE Transactions on Comm- unications, 1997,45(1):23-25.
-
7Rife D C,Vincent G A.Use of the discrete Fourier transform in the measurement of fr-equencies and levels of tones[J].Bell Labs Technical Jou- rnal, 1970,49(2): 197-228.
-
8Quinn B G.Estimating frequency by interpolation using F- ourier coefficients[J].IEEE Transactions on Signal Proc- essing, 1994,42(5): 1264-1268.
-
9Quinn B G.Estimation of frequency,amplitude,and phase from the DFT of a time series[J].Ceskoslovenska Fysiol-ogle, 1965,13 (3): 17-22.
-
10Rife D C.Boorstyn RR:Single-tone parameter estimation from discrete time observations[J].IEEE Transactions on Information Theory, 1974,20(5):591-598.
