Automatic IP generation of FFT/IFFT processors with word-length optimization for MIMO-OFDM systems

Pei Yun Tsai, Chia Wei Chen, Meng Yuan Huang

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)

摘要

A systematic approach is presented for automatically generating variable-size FFT/IFFT soft intellectual property (IP) cores for MIMO-OFDM systems. The finite-precision effect in an FFT processor is first analyzed, and then an effective word-length searching algorithm is proposed and incorporated in the proposed IP generator. From the comparison, we show that our analysis of the finite precision effect in FFT is much more accurate than the previous work. With the flexible architecture and the effective word-length searching techniques, we can strike a good balance for the performance and the hardware cost of the generated IP cores. The generated FFT soft IP cores are portable and independent of the silicon technology, which helps to greatly reduce the design time. Experimental results demonstrate that the proposed IP generator indeed provides FFT IPs which meet the requirements and are more suitable in recent MIMO-OFDM communication standards/drafts than some conventional FFT IP generators.

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文章編號136319
期刊Eurasip Journal on Advances in Signal Processing
2011
DOIs
出版狀態已出版 - 2011

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