Decision-Directed Carrier Phase and Symbol Timing Recovery for LDPC-Coded Systems

被引：0
|
作者：
Wang, Hua [1 ]
Wu, Nan [1 ]
Kuang, Jingming [1 ]
Yan, Chaoxing [1 ]
机构：
[1] Beijing Inst Technol, Dept Elect Engn, Beijing 100081, Peoples R China
来源：
2010 IEEE 72ND VEHICULAR TECHNOLOGY CONFERENCE FALL | 2010年
关键词：
Carrier Phase Recovery; Symbol Timing Recovery; Decision-directed; LDPC-coded System; Code-aided; PERFORMANCE;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we consider the effect of different rules of symbol decision on the performance of decision-directed synchronizers for LDPC-coded systems. Different from the conventional hard symbol decision based on the Maximum-A-Posteriori (MAP) criterion, soft symbol decision can be considered as the Minimum-Mean-Square-Error (MMSE) estimation of the transmitted symbol. By whether or not the coding constraints are taken into account, soft symbol decision is derived in non-code-aided (NCA) mode and code-aided (CA) mode, respectively. The performance of the soft decision-directed (SDD) synchronizer is compared with that of the hard decision-directed (HDD) counterpart in both NCA and CA mode. Simulation results show that, without much implementation complexity increase, the jitter performance of the synchronizer in CA mode significantly outperforms that in NCA mode. It is also observed that, in the scenario of this paper, SDD synchronizer works only slightly better than HDD synchronizer.
引用
收藏
页数：5
相关论文
共 50 条
  • [31] DECISION-DIRECTED CARRIER RECOVERY LOOP FOR DUOBINARY ENCODED OFFSET QPSK SIGNALS
    TAYLOR, DP
    CHEUNG, DCC
    IEEE TRANSACTIONS ON COMMUNICATIONS, 1979, 27 (02) : 461 - 468
  • [32] Modified Decision-Directed Carrier Recovery Loop for 16-QAM Signals
    Lagha, Marwa Kazdoghli
    Scalart, Pascal
    Gerzaguet, Robin
    Bramerie, Laurent
    Carer, Arnaud
    2018 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP), 2018,
  • [33] A non-data-aided decision-directed feedforward symbol timing estimation with various spacing
    Wong, WK
    VTC2004-FALL: 2004 IEEE 60TH VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-7: WIRELESS TECHNOLOGIES FOR GLOBAL SECURITY, 2004, : 2225 - 2229
  • [34] BER Performance of LDPC-Coded Nonlinear OFDM Systems
    Al Muaini, S.
    Al-Dweik, A.
    Al-Qutayri, M.
    2013 FIRST INTERNATIONAL CONFERENCE ON COMMUNICATIONS SIGNAL PROCESSING, AND THEIR APPLICATIONS (ICCSPA'13), 2013,
  • [35] Pilotless frame synchronization for LDPC-coded transmission systems
    Lee, Dong-U
    Kim, Hyungjin
    Jones, Christopher R.
    Villasenor, John D.
    IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2008, 56 (07) : 2865 - 2874
  • [36] Optimized decision-directed carrier recovery loop for 16-QAM constellations
    Metref, Adel
    Le Guennec, Daniel
    Palicot, Jacques
    GLOBECOM 2007: 2007 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-11, 2007, : 3112 - 3117
  • [37] SYMBOL TIMING RECOVERY SCHEME TOLERANT TO CARRIER PHASE ERROR
    VERDIN, D
    TOZER, TC
    ELECTRONICS LETTERS, 1994, 30 (02) : 116 - 117
  • [38] Decoding on graphs: LDPC-coded MISO systems and belief propagation
    Djahanshahi, Amir H.
    Siegel, Paul H.
    Milstein, Larry B.
    WCNC 2008: IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-7, 2008, : 94 - 99
  • [39] BLIND EQUALIZATION AND CARRIER RECOVERY USING A STOP-AND-GO DECISION-DIRECTED ALGORITHM
    PICCHI, G
    PRATI, G
    IEEE TRANSACTIONS ON COMMUNICATIONS, 1987, 35 (09) : 877 - 887
  • [40] Turbo receiver design with carrier-frequency offset estimation for LDPC-coded MIMO OFDM systems
    Salari, S.
    Ardebilipour, M.
    Ahmadian, M.
    Cances, J. P.
    Meghdadi, V.
    9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3, 2007, : 1911 - +
12345