상세정보
학술대회
Efficient IFFT Architecture Design for OFDM Applications
- 발행일
- 201211
- 출처
- International SoC Design Conference (ISOCC) 2012, pp.231-234
- 협약과제
- 12VI1100, 스마트 모바일 서비스를 위한 B4G 이동통신 기술 개발, 박남훈
- 초록
- In this paper, to reduce the memory size of inverse Fourier transform (IFFT) for OFDM-based applications, we propose a new IFFT design technique based on a signed integer mapping of three IFFT input signals: modulated data, pilot and null signals. The proposed method focuses on reducing the size of memory cells in the first two stages of the single-path delay feedback (SDF) IFFT architectures since the first two stages require 75% of the overall memory cells. By Synopsys simulation of the first two stages of IFFT, it is shown that the proposed method achieves about 77.7% reduction in area compared with the conventional method, and about 36.9% reduction compared with CIM method. © 2012 IEEE.
- KSP 제안 키워드
- Architecture Design, Conventional methods, Design techniques, Memory size, inverse Fourier transform, memory cell, single-path delay feedback(SDF)