Name
Abstract | ||
|---|---|---|
This paper presents a new memory reduction method of IFFT for OFDM systems, based on a mapping of three IFFT input signals which consist of modulated data, pilot and null signals. The proposed method focuses on reducing the memory size in the bit-reversal part which requires the largest number of memory cells in IFFT architectures. To reduce the memory size, we propose a decimation-in-time (DIT) twiddle factor shifting algorithm to remove the multiplications in the first two stages. It is shown that the proposed method achieves a memory reduction of about 30% compared to previous methods. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1587/elex.11.20140010 | IEICE ELECTRONICS EXPRESS |
Keywords | Field | DocType |
IFFT, memory reduction, DIT, SDF | Computer science,Electronic engineering,Orthogonal frequency-division multiplexing | Journal |
Volume | Issue | ISSN |
11 | 5 | 1349-2543 |
Citations | PageRank | References |
0 | 0.34 | 3 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ho-Yun Lee | 1 | 0 | 0.34 |
| Jun-Ho Kim | 2 | 0 | 0.34 |
| In-Gul Jang | 3 | 7 | 3.39 |
| Kyung Ju Cho | 4 | 72 | 11.76 |
| Jin-Gyun Chung | 5 | 169 | 28.63 |