Efficient hardware implementation of a full COFDM processor with robust channel equalization and reduced power consumption

  • Alexander López-Parrado Universidad del Valle https://orcid.org/0000-0002-0274-6901
  • Jaime Velasco-Medina Universidad del Valle
  • Julián Adolfo Ramírez-Gutiérrez CEIFI


This work presents the design of a 12 Mb/s Coded Orthogonal Frequency Division Multiplexing (COFDM) baseband processor for the standard IEEE 802.11a. The COFDM baseband processor was designed by using ourdesigned circuits for carrier phase correction, symbol timing synchronization, robust channel equalization and Viterbi decoding. These circuits are flexible, parameterized and described by using generic structural VHDL. The COFDM processor has two clock domains for reducing power consumption, it was synthesized on a Stratix II FPGA, and it was experimentally tested by using 2.4 GHz Radio Frequency (RF) circuitry.
= 9 veces | PDF (ESPAÑOL (ESPAÑA))
= 8 veces|


Download data is not yet available.


H. Schulze, C. Lüders. Theory and Applications of OFDM and CDMA Wideband Wireless Communications. 1st ed. Ed. John Wiley & Sons. Chichester, England. 2005. pp. 93-263.

The Institute of Electrical and Electronics Engineers, Inc. IEEE Std. 802.1la-1999, Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specification: High-speed Physical Layer in the 5 GHz Band. New York, USA. 1999. pp. 1-83.

European Telecommunications Standards Institute. ETSI EN 300 744 Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for digital terrestrial television. Sophia Antipolis, France. 2009. pp. 1-47.

The Institute of Electrical and Electronics Engineers, Inc. IEEE 802.22-2011, Wireless Regional Area Networks (WRAN) - Specific Requirements Part 22: Cognitive Wireless RAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Policies and Procedures for Operation in the TV Bands. New York. USA. 2011. pp. 1-659.

European Telecommunications Standards Institute. LTE; ETSI TS 136 201 V9.1.0 (2010-04), Evolved Universal Terrestrial Radio Access (E-UTRA); Long Term Evolution (LTE) physical layer; General description (3GPP TS 36.201 vers. 9.1.0 Release 9). Sophia Antipolis, France. 2010. pp.1-15.

The Institute of Electrical and Electronics Engineers, Inc. IEEE 1901-2010, IEEE Standard for Broadband over Power Line Networks: Medium Access Control and Physical Layer Specifications. New York, USA. 2010. pp. 1-1586.

International Telecommunication Union. ITU-T G.992.1, Asymmetric digital subscriber line (ADSL) transceivers. Geneva, Switzerland. 1999. pp. 1-242.

Altera Corp. Implementing OFDM Using Altera Intellectual Property. San Jose, USA. 2001. pp. 1-8.

J. Yang, Y. Dong, G. Zhao, W. Zhang. The design of OFDM base-band data transmission system based on FPGA. 2nd International Conference on Artificial Intelligence. Management Science and Electronic Commerce (AIMSEC). Dengfeng, China. 2011. pp. 743-746.

J. García, R. Cumplido. On the design of an FPGA-Based OFDM modulator for IEEE 802.11a. 2nd Int. Conf. on Electrical and Electronics Engineering. Mexico, Mexico. 2005. pp. 114-117.

J. Fernández, K. Borries, L. Cheng, B. Kumar, D. Stancil, F. Bai. “Performance of the 802.11p Physical Layer in Vehicle-to-Vehicle Environments”. IEEE Transactions on Vehicular Technology. Vol. 61. 2012. pp. 3-14.

M. Vestias, H. Sarmento. FPGA implementation of IEEE 802.15.3c receiver. 2012 IEEE 16th International Symposium on Consumer Electronics (ISCE). Harrisburg, USA. 2012. pp.1-2.

G. Kiokes, G. Economakos, A. Amditis, N. Uzunoglu. Design and implementation of an OFDM system for vehicular communications with FPGA technologies. 6th Int. Conf. on Design & Technology of Integrated Systems in Nanoscale Era. Athens, Greece. 2011. pp. 1-6.

C. Dick, F. Harris. FPGA Implementation of an OFDM PHY. Conference Record of the 37th Conference on Signals, Systems and Computers. Pacific Grove, USA. 2003. pp. 9-12.

F. Manavi, Y. Shayan. Implementation of OFDM modem for the Physical Layer of IEEE 802.11a Standard Based on Xilinx Virtex-I1 FPGA. Vehicular Technology Conference. Los Angeles, USA. 2004. pp. 1768-1772.

A. Troya, K. Maharatna, M. Krstic, E. Grass, U. Jagdhold, R. Kraemer. “Low-Power VLSI Implementation of the Inner Receiver for OFDM-Based WLAN Systems”. IEEE Transactions on Circuits and Systems I. Vol. 55. 2008. pp. 672-686.

A. Troya. Synchronization and Channel Estimation in OFDM: Algorithms for Efficient Implementation of WLAN Systems. PhD Thesis. Brandenburgische Technische Universität. Cottbus, Germany. 2004. pp. 1-225.

C. Wu. Research and Implementation on Timing and Frequency Synchronization for Wireless LANs. Master Thesis. Institute of Electronics Engineering National Yunlin University of Sciense and Technology. Douliu, China. 2005. pp. 1-95.

A. Viterbi. “Error Bounds for Convolutional Codes and an Asymptotically Optimum Decoding Algorithm”. IEEE Trans. on Inf. Theory. Vol.13. 1967. pp. 260-269.

J. Heller, I. Jacobs. “Viterbi Decoding for Satellite and Space Communication”. IEEE Transactions on Communication Technology. Vol. 19. 1971. pp. 835- 848.

S. He, M. Torkelson. A New Approach to Pipeline FFT Processor. Proceedings of IPPS ‘96 the 10th International Parallel Processing Symposium. Honolulu, USA. 1996. pp. 766-770.

T. Schmidl, D. Cox. “Robust Frequency and Timing Synchronization for OFDM”. IEEE Transactions on Communications. Vol. 45. 1997. pp. 1613-1621.

R. Andraka. A survey of CORDIC algorithms for FPGA based computers. Proceedings of the ‘98 ACM/ SIGDA 6th int. symposium on FPGAs. Monterrey, USA. 1998. pp. 191-200.

Altera Corp. Stratix II DSP Development Board Reference Manual. San Jose, USA. 2006. pp. 1-60.

Altera Corp. Quartus II Handbook Version 12.0. San Jose, USA. 2012. pp. 1547-1618.

How to Cite
López-Parrado A., Velasco-Medina J., & Ramírez-Gutiérrez J. A. (2013). Efficient hardware implementation of a full COFDM processor with robust channel equalization and reduced power consumption. Revista Facultad De Ingeniería Universidad De Antioquia, (68), 48-60. Retrieved from https://revistas.udea.edu.co/index.php/ingenieria/article/view/17040