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In this paper we present a parallel, FPGA-based implementation of a 256-point Fast Fourier Transform capable to perform over 78 million transformations per second. Its area of operation is located in the ultra-high speed OFDM communication in optical networks where the FFT algorithm provides the basis of the digital signal processing. The main focus lies on an implementation using as less as possible...
Fast verification of the prototype design on software radio platform has become one of the most important research topics in communication systems. Based on OFDM receiver which is implemented on FPGA, the paper focuses on many key issues in the implementation of the strategy in software wireless platform such as OFDM frame synchronization, frequency compensation, symbol timing, etc. The proposed corresponding...
We report the first FPGA-based real-time implementation of a multi-gigabit receiver for coherent optical OFDM (CO-OFDM) signal. The basic CO-OFDM signal processing and BER sensitivity performance are evaluated in real-time.
This paper describes the concept, architecture, development and demonstration of a 4-transmitter, real-time space-time encoder for multiple-input and multiple-output (MIMO) wireless systems. It is implemented on an FPGA chip in the Altera Stratix EP1S25 DSP Development Kit using VHDL. The system can be configured to use either space-time block coding (STBC) or space-time trellis coding (STTC). It...
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