Efficient IFFT architecture design for OFDM applications

In Gul Jang; Dae Ho Kim; Ho Yun Yi; Jin Gyun Chung; Kyung Ju Cho

doi:10.1109/ISOCC.2012.6407082

Efficient IFFT architecture design for OFDM applications

In Gul Jang^*
, Dae Ho Kim
, Ho Yun Yi
, Jin Gyun Chung
, Kyung Ju Cho

^*Corresponding author for this work

Division of Electronic Engineering

Electronics and Telecommunications Research Institute
Wonkwang University

Research output: Contribution to conference › Conference paper › peer-review

1 Scopus citations

Abstract

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.

Original language	English
Title of host publication	ISOCC 2012 - 2012 International SoC Design Conference
Pages	231-234
Number of pages	4
DOIs	https://doi.org/10.1109/ISOCC.2012.6407082
State	Published - 2012
Event	2012 International SoC Design Conference, ISOCC 2012 - Jeju Island, Korea, Republic of Duration: 2012.11.4 → 2012.11.7

Publication series

Name	ISOCC 2012 - 2012 International SoC Design Conference

Conference

Conference	2012 International SoC Design Conference, ISOCC 2012
Country/Territory	Korea, Republic of
City	Jeju Island
Period	12.11.4 → 12.11.7

Keywords

IFFT
memory size reduction
SDF architecture

Quacquarelli Symonds(QS) Subject Topics

Computer Science & Information Systems
Engineering - Electrical & Electronic
Engineering - Petroleum

Access to Document

10.1109/ISOCC.2012.6407082

Cite this

@inproceedings{04963c666f404cc5926fb1807d0e81e3,

title = "Efficient IFFT architecture design for OFDM applications",

abstract = "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.",

keywords = "IFFT, memory size reduction, SDF architecture",

author = "Jang, \{In Gul\} and Kim, \{Dae Ho\} and Yi, \{Ho Yun\} and Chung, \{Jin Gyun\} and Cho, \{Kyung Ju\}",

year = "2012",

doi = "10.1109/ISOCC.2012.6407082",

language = "English",

isbn = "9781467329880",

series = "ISOCC 2012 - 2012 International SoC Design Conference",

pages = "231--234",

booktitle = "ISOCC 2012 - 2012 International SoC Design Conference",

note = "2012 International SoC Design Conference, ISOCC 2012 ; Conference date: 04-11-2012 Through 07-11-2012",

}

Jang, IG, Kim, DH, Yi, HY, Chung, JG & Cho, KJ 2012, Efficient IFFT architecture design for OFDM applications. in ISOCC 2012 - 2012 International SoC Design Conference., 6407082, ISOCC 2012 - 2012 International SoC Design Conference, pp. 231-234, 2012 International SoC Design Conference, ISOCC 2012, Jeju Island, Korea, Republic of, 12.11.4. https://doi.org/10.1109/ISOCC.2012.6407082

TY - GEN

T1 - Efficient IFFT architecture design for OFDM applications

AU - Jang, In Gul

AU - Kim, Dae Ho

AU - Yi, Ho Yun

AU - Chung, Jin Gyun

AU - Cho, Kyung Ju

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

KW - IFFT

KW - memory size reduction

KW - SDF architecture

UR - https://www.scopus.com/pages/publications/84873975533

U2 - 10.1109/ISOCC.2012.6407082

DO - 10.1109/ISOCC.2012.6407082

M3 - Conference paper

AN - SCOPUS:84873975533

SN - 9781467329880

T3 - ISOCC 2012 - 2012 International SoC Design Conference

SP - 231

EP - 234

BT - ISOCC 2012 - 2012 International SoC Design Conference

T2 - 2012 International SoC Design Conference, ISOCC 2012

Y2 - 4 November 2012 through 7 November 2012

ER -

Efficient IFFT architecture design for OFDM applications

Abstract

Publication series

Conference

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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