@inproceedings{8c14dccd2bd94042afcd430d8beb7cae,
title = "Reduced memory IFFT design for OFDM systems using DIT twiddle factor shifting algorithm",
abstract = "In this paper, to reduce the memory size of IFFT for OFDM systems, we propose a new IFFT design based on a mapping of three IFFT input signals: modulated data, pilot and null signals. To reduce the memory cells, the proposed method focuses on reducing the size of memory cells in the bit-reversal part which requires the largest number of memory cells in IFFT. To this end, we propose a DIT(decimation-in-time) twiddle factor shifting algorithm to remove the multipliers in the first two stages. It is shown that the proposed method achieves a memory reduction of about 30\% compared with conventional methods.",
keywords = "DIT, IFFT, mapping, memory reduction, SDF",
author = "Lee, \{Ho Yun\} and Kim, \{Jun Ho\} and Chung, \{Jin Gyun\}",
year = "2013",
doi = "10.1109/ISOCC.2013.6864055",
language = "English",
isbn = "9781479911417",
series = "ISOCC 2013 - 2013 International SoC Design Conference",
publisher = "IEEE Computer Society",
pages = "374--375",
booktitle = "ISOCC 2013 - 2013 International SoC Design Conference",
note = "2013 International SoC Design Conference, ISOCC 2013 ; Conference date: 17-11-2013 Through 19-11-2013",
}