FPGA implementation of OFDM physical layer

	FPGA implementation of OFDM physical layer
The International Conference on Electrical Engineering
Article 92, Volume 6, 6th International Conference on Electrical Engineering ICEENG 2008, May 2008, Page 1-10 PDF (630.66 K)
Document Type: Original Article
DOI: 10.21608/iceeng.2008.34340
Authors
Hesham M. El Maghraby; Alaa El Din Rohiem; Moataz M. Salah; Medhat Mokhtar
Egyptian Armed Forces.
Abstract
Abstract: Future wireless applications, targeting multimedia and high-speed internet access, require techniques to improve the link capacity and robustness. Current and future communication schemes tend to use Orthogonal Frequency Division Multiplexing (OFDM) systems in order to provide high baud rates and less intersymbol interference. The 802.11a, 802.11g, 802.16 and 802.20 standards all rely on the OFDM [1]. This paper presents an implementation of an OFDM physical layer on Field Programmable Gate Array (FPGA). The FPGA implementation allows flexible integration of extensions to improve the quality of service. The difficult task is the implementation of the FFT/IFFT module in the OFDM system. Two approaches of implementation also introduced. Simulation results and Hardware (HW) tests are presented, and a comparison between the two approaches of implementation is discussed.
Keywords
OFDM; FPGA; FFT


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