IEICE TRANSACTIONS on Fundamentals
Variable Guard Interval Based on Maximum Delay Estimation for Adaptive OFDM Systems
Summary :
In orthogonal frequency division multiplexing (OFDM) system, a guard interval (GI) is used to remove the inter-symbol interference (ISI) due to a multipath channel. It is difficult to set an optimal GI length in the environment whose multipath varies. In this paper, we propose a variable guard interval based on the estimated maximum delay of a multipath channel. The maximum delay is estimated from a channel impulse response (CIR), which is estimated by a preamble symbol. However, since the estimated CIR includes the noise, it is difficult to decide the optimal GI. In order to solve the problem, we introduce the method which selects the path whose signal to noise ratio is high. Additionally, the information of the optimal GI length is required to be transmitted from a receiver to a transmitter. In this paper, we use an acknowledgment (ACK) frame for the feedback of the GI information.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E92-A No.11 pp.2862-2865
- Publication Date
- 2009/11/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.E92.A.2862
- Type of Manuscript
- Special Section LETTER (Special Section on Smart Multimedia & Communication Systems)
- Category
- Communication Theory and Systems
Authors
Keyword
Latest Issue
Copyrights notice of machine-translated contents
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Cite this
Copy
Naoto SASAOKA, Hideaki TANAKA, Yuki ISHIKAWA, Takaharu NAKANISHI, Yoshio ITOH, "Variable Guard Interval Based on Maximum Delay Estimation for Adaptive OFDM Systems" in IEICE TRANSACTIONS on Fundamentals,
vol. E92-A, no. 11, pp. 2862-2865, November 2009, doi: 10.1587/transfun.E92.A.2862.
Abstract: In orthogonal frequency division multiplexing (OFDM) system, a guard interval (GI) is used to remove the inter-symbol interference (ISI) due to a multipath channel. It is difficult to set an optimal GI length in the environment whose multipath varies. In this paper, we propose a variable guard interval based on the estimated maximum delay of a multipath channel. The maximum delay is estimated from a channel impulse response (CIR), which is estimated by a preamble symbol. However, since the estimated CIR includes the noise, it is difficult to decide the optimal GI. In order to solve the problem, we introduce the method which selects the path whose signal to noise ratio is high. Additionally, the information of the optimal GI length is required to be transmitted from a receiver to a transmitter. In this paper, we use an acknowledgment (ACK) frame for the feedback of the GI information.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E92.A.2862/_p
Copy
@ARTICLE{e92-a_11_2862,
author={Naoto SASAOKA, Hideaki TANAKA, Yuki ISHIKAWA, Takaharu NAKANISHI, Yoshio ITOH, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Variable Guard Interval Based on Maximum Delay Estimation for Adaptive OFDM Systems},
year={2009},
volume={E92-A},
number={11},
pages={2862-2865},
abstract={In orthogonal frequency division multiplexing (OFDM) system, a guard interval (GI) is used to remove the inter-symbol interference (ISI) due to a multipath channel. It is difficult to set an optimal GI length in the environment whose multipath varies. In this paper, we propose a variable guard interval based on the estimated maximum delay of a multipath channel. The maximum delay is estimated from a channel impulse response (CIR), which is estimated by a preamble symbol. However, since the estimated CIR includes the noise, it is difficult to decide the optimal GI. In order to solve the problem, we introduce the method which selects the path whose signal to noise ratio is high. Additionally, the information of the optimal GI length is required to be transmitted from a receiver to a transmitter. In this paper, we use an acknowledgment (ACK) frame for the feedback of the GI information.},
keywords={},
doi={10.1587/transfun.E92.A.2862},
ISSN={1745-1337},
month={November},}
Copy
TY - JOUR
TI - Variable Guard Interval Based on Maximum Delay Estimation for Adaptive OFDM Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2862
EP - 2865
AU - Naoto SASAOKA
AU - Hideaki TANAKA
AU - Yuki ISHIKAWA
AU - Takaharu NAKANISHI
AU - Yoshio ITOH
PY - 2009
DO - 10.1587/transfun.E92.A.2862
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E92-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2009
AB - In orthogonal frequency division multiplexing (OFDM) system, a guard interval (GI) is used to remove the inter-symbol interference (ISI) due to a multipath channel. It is difficult to set an optimal GI length in the environment whose multipath varies. In this paper, we propose a variable guard interval based on the estimated maximum delay of a multipath channel. The maximum delay is estimated from a channel impulse response (CIR), which is estimated by a preamble symbol. However, since the estimated CIR includes the noise, it is difficult to decide the optimal GI. In order to solve the problem, we introduce the method which selects the path whose signal to noise ratio is high. Additionally, the information of the optimal GI length is required to be transmitted from a receiver to a transmitter. In this paper, we use an acknowledgment (ACK) frame for the feedback of the GI information.
ER -
English
