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Recent standards for wireless transmission require reliable synchronization for channels with low signal-to-noise ratio (SNR) as well as with a large amount of frequency offset, which necessitates a robust correlator structure for the initial frame synchronization process. In this paper, a new correlation strategy especially targeted for low SNR regions is proposed and its performance is analyzed. By utilizing a modified energy correction term, the proposed method effectively reduces the variance of the decision variable to enhance the detection performance. Most importantly, the method is demonstrated to outperform all previously reported schemes by a significant margin, for SNRs below 5 dB regardless of the existence of the frequency offsets. A variation of the proposed method is also presented for further enhancement over the channels with small frequency errors. The particular application considered for the performance verification is the second generation digital video broadcasting system for satellites (DVB-S2).
Massey JL: Optimum frame synchronization. IEEE Transactions on Communications 1972, 20(2):115-119. 10.1109/TCOM.1972.1091127 CrossRef
Nielsen P: Some optimum and suboptimum frame synchronizers for binary data in Gaussian noise. IEEE Transactions on Communications 1973, 21(6):770-772. 10.1109/TCOM.1973.1091725 CrossRef
Bi G-G: Performance of frame sync acquisition algorithms on the AWGN channel. IEEE Transactions on Communications 1983, 31(10):1196-1201. 10.1109/TCOM.1983.1095746 CrossRef
Lui GL, Tan HH: Frame synchronization for Gaussian channels. IEEE Transactions on Communications 1987, 35(8):818-829. 10.1109/TCOM.1987.1096864 CrossRef
Gansman JA, Fitz MP, Krogmeier JV: Optimum and suboptimum frame synchronization for pilot-symbol-assisted modulation. IEEE Transactions on Communications 1997, 45(10):1327-1337. 10.1109/26.634696 CrossRef
Choi ZY, Lee YH: Frame synchronization in the presence of frequency offset. IEEE Transactions on Communications 2002, 50(7):1062-1065. 10.1109/TCOMM.2002.800815 CrossRef
Park S, Park D, Park H, Lee K: Low-complexity frequency-offset insensitive detection for orthogonal modulation. Electronics Letters 2005, 41(22):1226-1228. 10.1049/el:20052225 CrossRef
Villanti M, Salmi P, Corazza GE: Differential post detection integration techniques for robust code acquisition. IEEE Transactions on Communications 2007, 55(11):2172-2184. CrossRef
Corazza GE, Pedone R: Generalized and average likelihood ratio testing for post detection integration. IEEE Transactions on Communications 2007, 55(11):2159-2171. CrossRef
Kim P, Corazza GE, Pedone R, Villanti M, Chang D-I, Oh D-G: Enhanced frame synchronization for DVB-S2 system under a large of frequency offset. Proceedings of IEEE Wireless Communications and Networking Conference (WCNC '07), March 2007, Hong Kong 1183-1187.
Digital video broadcasting (DVB): second generation graming structure, channel coding and modulation system for broadcasting, interative service, news gathering and other broadband satellite application In ETSI EN. European Broadcasting Union, Geneva, Switzerland; June 2004.
Digital video broadcasting (DVB): user guidelines for the second generation system for broadcasting, interactive services, news gathering and other broadband satellite applications In ETSI EN. European Broadcasting Union, Geneva, Switzerland; February 2005.
Acar G, Kasparis C, Thompson PT: The enhancement of DVB-S2&DVB-RCS by adding additional mobile user capability. Proceedings of IET Seminar on Digital Video Broadcasting over Satellite: Present and Future, November 2006, London,UK 81-90. CrossRef
Cioni S, Niebla CP, Granados GS, Scalise S, Vanelli-Coralli A, Castro MAV: Advanced fade countermeasures for DVB-S2 systems in railway scenarios. EURASIP Journal on Wireless Communications and Networking 2007, 2007:-17.
Morlet C, Ginesi A: Introduction of mobility aspects for DVB-S2/RCS broadband systems. Proceedings of the International Workshop on Satellite and Space Communications (IWSSC '06), September 2006, Leganés, Spain 93-97.
Li Q, Zeng X, Wu C, Zhang Y, Deng Y, Jun H: Optimal frame synchronization for DVB-S2. Proceedings of IEEE International Symposium on Circuits and Systems (ISCAS '08), May 2008, Seattle, Wash, USA 956-959.
- Robust Frame Synchronization for Low Signal-to-Noise Ratio Channels Using Energy-Corrected Differential Correlation
- Springer International Publishing
- EURASIP Journal on Wireless Communications and Networking
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