FPGA Implementation Radix-2 Architecture For Twin Data

V. Nancharaiah *, B. Sridhar **, Indira. S ***
*-*** Department of Electronics and Communication Engineering, Lendi Institute of Engineering and Technology, Vizianagaram, India.
Periodicity:September - November'2019
DOI : https://doi.org/10.26634/jcir.7.4.17453

Abstract

The fundamental operation in digital signal processing and wireless signal processing applications like Multiple Input and Multiple Output (MIMO), Orthogonal Frequency Division Multiple Access (OFDM) is a Fast Fourier Transform(FFT). FFT is the fastest way of computing Discrete Fourier Transform by way of Divide and Conquer technique. There are different ways of developing VLSI architecture for FFT processor by using Delay elements (SDF, MDF), Delay Commutators (SDC, MDC). The famous architecture for FFT processor is Single Delay Feedback (SDF) architecture which has an advantage of full (100%) hardware utilization. Another famous architecture known as Multipath Delay Commutator (MDC) has an advantage high throughput at 50% of hardware utilization. In this project, we propose VLSI hardware architecture for twin data stream processing using Radix-2 algorithm. The proposed architecture is based on pipelined MDC architecture. The proposed architecture uses both Decimation-In-Time FFT (DIT-FFT) and Decimation-In-Frequency FFT (DIF-FFT) to process even and odd samples of twin data streams. In this architecture the bit reversal operation is carried out by the proposed architecture itself. When compare to other exiting architecture to proposed work designed with shift registers, bit reverserval operation performed in FFT with a high throughput and less numbers of registers.

Keywords

FFT algorithms, N-DIF FFT, FPGA architectures, Data streams, MIMO-OFDM.

How to Cite this Article?

Nanchariah, V., Sridhar, B., and Indira, S. (2019). FPGA Implementation Radix-2 Architecture For Twin Data. i-manager's Journal on Circuits and Systems , 7(4), 27-37. https://doi.org/10.26634/jcir.7.4.17453

References

[1]. Cho, S. I., & Kang, K. M. (2010). A Low Complexity 128 Point Mixed Radix FFT Processor for MB OFDM UWB Systems. ETRI Journal, 32(1), 1-10. https://doi.org/10.4218/etrij.10. 0109.0232
[2]. Cooley, J. W., & Tukey, J. W. (1965). An algorithm for the machine calculation of complex Fourier series. Mathematics of computation, 19(90), 297-301. https:// doi.org/10.2307/2003354
[3]. Cortés, A., Vélez, I., & Sevillano, J. F. (2009). Radix $ r $ FFTs: Matricial representation and SDC/SDF pipeline implementation. IEEE transactions on Signal Processing, 57(7), 2824-2839. https://doi.org/10.1109/TSP.2009.2016 276
[4]. Glittas, A. X., Sellathurai, M., & Lakshminarayanan, G. (2016). A normal I/O order radix-2 FFT architecture to process twin data streams for MIMO. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 24(6), 2402- 2406.
[5]. He, S., & Torkelson, M. (1996, April). A new approach to pipeline FFT processor. In Proceedings of International Conference on Parallel Processing, (pp. 766-770). IEEE. https://doi.org/10.1109/IPPS.1996.508145
[6]. He, S., & Torkelson, M. (1998, October). Designing pipeline FFT processor for OFDM (de) modulation. In 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No. 98EX167) (pp. 257-262). IEEE. https://doi.org/10.1109/ISSSE.1998. 738077
[7]. Jiang, R. M. (2007). An area-efficient FFT architecture for OFDM digital video broadcasting. IEEE Transactions on Consumer Electronics, 53(4), 1322-1326. https://doi.org/ 10.1109/TCE.2007.4429219
[8]. Jung, Y., Yoon, H., & Kim, J. (2003). New efficient FFT algorithm and pipeline implementation results for OFDM/DMT applications. IEEE Transactions on Consumer Electronics, 49(1), 14-20. https://doi.org/10.1109/TCE. 2003.1205450
[9]. Lin, C. T., Yu, Y. C., & Van, L. D. (2006, May). A lowpower 64-point FFT/IFFT design for IEEE 802.11 a WLAN application. In 2006, IEEE International Symposium on Circuits and Systems (pp. 4-pp). IEEE. https://doi.org/ 10.1109/ISCAS.2006.1693635
[10]. Oh, J. Y., & Lim, M. S. (2005). New radix-2 to the 4 power pipeline FFT processor. IEICE transactions on electronics, 88(8), 1740-1746. https://doi.org/10.1093/ ietele/e88-c.8.1740
[11]. Peng, S. Y., Shr, K. T., Chen, C. M., & Huang, Y. H. (2010, June). Energy-efficient 128∼ 2048/1536-point FFT processor with resource block mapping for 3GPP-LTE system. In Proceedings of International Conference on Green Circuits System (pp. 14-17). https://doi.org/10. 1109/ICGCS.2010.5543106
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
USD EUR INR USD-ROW
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.