OFDM通信系统中一种高效的FFT体系结构

2009 International Conference on Advances in Recent Technologies in Communication and Computing Pub Date : 2009-10-27 DOI:10.1109/ARTCom.2009.78

K. Harikrishna, T. Rao

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引用次数: 3

摘要

本文介绍了一种用于OFDM调制器和解调器的高性能FFT的高级实现。该设计已用VHDL编码，并针对Xilinx Virtex-E XCV3200E fpga。硬件需求比较表明，我们的实现优于同一系列fpga上的其他FFT实现。基数-22算法具有与基数-4算法相同的乘法复杂度，但保留了基数-2算法的蝴蝶结构。

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An Efficient FFT Architecture for OFDM Communication Systems

This paper presents a high level implementation of a high performance FFT for Modulator and Demodulator in OFDM. The design has been coded in VHDL and targeted into Xilinx Virtex-E XCV3200E FPGAs. The hardware requirement comparison shows that our implementation outperforms other implementations of FFT on the same series of FPGAs. Radix-22 algorithm has the same multiplicative complexity as the radix-4 algorithm, but retains the butterfly structure of radix-2 algorithm.

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2009 International Conference on Advances in Recent Technologies in Communication and Computing

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