DVB-T2系统基于前导符号的同步算法

doi:10.11959/j.issn.1000-436x.2017167

Abstract

Abstract:

DVB-T2（digita1 video broadcasting-second generation terrestria1）system adopted a preamb1e，with a specia1 C-A-B structure，to accomp1ish time-frequency synchronization.A11 existing preamb1e based synchronization a1gorithms on1y uti1ized the corre1ation between C and A or B and A，neg1ecting the conjugate symmetry character within A.By using this character，a new synchronization method was proposed to make detection probabi1ity higher and synchronization error sma11er.Monto Car1o simu1ations were carried out in AWGN（addictive white Gaussian noise）channe1 and TU6（typica1 urban）channe1 with ve1ocity of 30 km/h.Compared with existing synchronization methods，both higher detection probabi1ity and sma11er mean square error in time-frequency synchronization is achieved.

Key words: DVB-T2, preamb1e, synchronization, conjugate symmetry

CLC Number:

TN911.72

Jie TANG,Fang WANG,Ming-qi LI. Synchronization based on preamble symbol for DVB-T2 system[J]. Journal on Communications, 2017, 38(8): 94-100.

Figures/Tables 12

参数	值
FFT长度	8 192
CP长度	1 024
调制	16QAM
码率	$\frac{2}{3}$
符号/帧	12
时延δ	600
归一化频偏ε	0.4

References 16

[1]	ETSIDigital video broadcasting（DVB）; frame structure,channel coding and modulation for a second generation terrestrial television broadcasting System(DVB-T2)[S]. EN 302 755 V1.1.1, 2009.
[2]	AI B , GE J H , WANG Y . Symbol synchronization technique in COFDM systems[J]. IEEE Transactions on Broadcasting, 2004,50(1): 56-62.
[3]	AI B , YANG Z X , PAN C Y ,et al. On the synchronization techniques for wireless OFDM systems[J]. IEEE Transactions on Broadcasting, 2006,52(2): 236-244.
[4]	AI B , GE J H , WANG Y ,et al. Frequency offset estimation for OFDM in wireless communications[J]. IEEE Transactions on Consumer Electronics, 2004,50(1): 73-77.
[5]	AI B , SHEN Y , ZHONG Z D ,et al. Enhanced sampling clock offset correction based on time domain estimation scheme[J]. IEEE Transactions on Consumer Electronics, 2011,57(2): 696-704.
[6]	SCHMIDL T M , COX D C . Robust frequency and timing synchronization for OFDM[J]. IEEE Transactions on Communications, 1997,45(12): 1613-1621.
[7]	MINN H , ZENG M , BHARGAVA V K . On timing offset estimation for OFDM systems[J]. IEEE Communications Letters, 2000,4(7): 242-244.
[8]	PARK B , CHEON H , KANG C ,et al. A novel timing estimation for OFDM systems[J]. IEEE Transactions on Communication Letters, 2003,7(7): 239-241.
[9]	ETSIDigital video broadcasting（DVB）; implementation guide for a second generation digital terrestrial television broadcasting system(DVB-T2)[S]. TS 102 831 V1.2.1., 2012
[10]	DOBLADO J G , BAENA V , ORIA A C ,et al. Coarse time synchronisation for DVB-T2[J]. Electronic Letters, 2010,46(11): 797-799.
[11]	VIEBMANN A , WAADT A , SPIEGEL C ,et al. Implementation-friendly synchronization for DVB-T2[J]. Electronic Letters, 2010,46(4): 282-283.
[12]	ROTOLONI M , TOMASIN S , VANGELISTA L . Maximum likelihood estimation of time and carrier frequency offset for DVB-T2[J]. IEEE Transactions on Broadcasting, 2012,58(1): 77-86.
[13]	ZHANG X , LIU J , LI H ,et al. Maxmum likelihood synchronization for DVB-T2 in unknown fading channels[J]. IEEE Transactions on Broadcasting, 2015,61(4): 615-624.
[14]	ROTOLONI M , TOMASIN S , VANGELISTA L . On correction-based synchronization for DVB-T2[J]. IEEE Communications Letters, 2010,14(3): 248-250.
[15]	CAZALENS S , LESTHIEVENT G , ROS B ,et al. Theoretical study of P1 detection（synchronisation for DVB-T2 standard）[C]// 36th Int Conf Telecommun Signal Process(TSP). 2013: 249-253.
[16]	ZHANG X , BIE H , LEI C ,et al. A robust timing and frequency synchronization scheme for DVB-T2 System[C]// 2015 IEEE 81st Vehicular Technology Conference(VTC Spring). 2015: 1-6.

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相关算法	L₁	L₂	L₃
实现指南	1 024	1 024	1 024
Dablado	1 024	1 024	482
Vieβmann	542	482	2×482

Synchronization based on preamble symbol for DVB-T2 system

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