Data-aided algorithm based frequency synchronizer for DVB-S2

ABSTRACT

This paper presents an efficient frequency synchronizer for digital video broadcasting --- second generation (DVB-S2). Analyzing the robust algorithm among data-aided approaches, we find that the Luise & Reggiannini (L&R) algorithm is the most suitable one for coarse frequency estimation with respect to estimation performance and complexity. However, it requires many multipliers and adders to compute ouput values of correlators. We propose an efficient architecture identifying the serial correlator with the buffer and multiplexers. The proposed coarse frequency synchronizer can reduce the hardware complexity about 92% of the direct implementation. The proposed architecture has been implemented and verified on the Xilinx Virtex II FPGA.

REFERENCES

• 1: Digital video broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz satellite services, EN300 421 (V1.1.2), European Telecommunications Standards Institute(ETSI), 1997.
• 2: Digital video broadcasting (DVB); User guidelines for the second generation system for broadcasting, interactive services, news gathering and other broad-band satellite applications (DVB-S2), European Telecommunications Standards Institute (ETSI), TR 102 376, 2005
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• 6: J. W. Park, M. H. Sunwoo, P. S. Kim and D. I. Chang, "An efficient data-aided initial frequency synchronizer for DVB-S2," in Proc. IEEE Workshop on Signal Processing Systems (SiPS), Oct. 2007.
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INDEX TERMS

Primary Classification:
  E. Data
  E.4 CODING AND INFORMATION THEORY

Additional Classification:
  B. Hardware
  B.7 INTEGRATED CIRCUITS
      B.7.1 Types and Design Styles
          Subjects: Gate arrays; Algorithms implemented in hardware
  B.8 Performance and Reliability
      B.8.2 Performance Analysis and Design Aids

General Terms:
Algorithms, Design, Performance, Theory

Keywords:
coarse frequency synchronizer, data-aided (DA) algorithm, digital video broadcasting-satellite second generation (DVBS2), initial frequency synchronizer