Time-Domain Windowing Design for IEEE 802.11af Based TVWS-WLAN Systems to Suppress Out-of-Band Emission
Summary :
This paper proposes out-of-band emission reduction schemes for IEEE 802.11af based Wireless Local Area Network (WLAN) systems operating in TV White Spaces (TVWS). IEEE 802.11af adopts Orthogonal Frequency Division Multiplexing (OFDM) to exploit the TVWS spectrum effectively. The combination of the OFDM and TVWS may be able to solve the problem of frequency depletion. However the TVWS transmitter must satisfy a strict transmission spectrum mask and reduce out-of-band emission to protect the primary users. The digital convolution filter is one way of reducing the out-of-band emission. Unfortunately, implementing a strict mask needs a large number of filter taps, which causes high implementation complexity. Time-domain windowing is another effective approach. This scheme reduces out-of-band emission with low complexity but at the price of shortening the effective guard interval. This paper proposes a mechanism that jointly uses these two schemes for out-of-band emission reduction. Moreover, the appropriate windowing duration design is proposed in terms of both the out-of-band emission suppression and throughput performance for all mandatory mode of IEEE 802.11af system. The proposed time-domain windowing design reduces the number of multiplier by 96.5%.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E97-B No.4 pp.875-885
- Publication Date
- 2014/04/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E97.B.875
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Keiichi MIZUTANI
the National Institute of Information and Communications Technology (NICT)
Zhou LAN
the National Institute of Information and Communications Technology (NICT)
Hiroshi HARADA
the National Institute of Information and Communications Technology (NICT)
Keyword
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Keiichi MIZUTANI, Zhou LAN, Hiroshi HARADA, "Time-Domain Windowing Design for IEEE 802.11af Based TVWS-WLAN Systems to Suppress Out-of-Band Emission" in IEICE TRANSACTIONS on Communications,
vol. E97-B, no. 4, pp. 875-885, April 2014, doi: 10.1587/transcom.E97.B.875.
Abstract: This paper proposes out-of-band emission reduction schemes for IEEE 802.11af based Wireless Local Area Network (WLAN) systems operating in TV White Spaces (TVWS). IEEE 802.11af adopts Orthogonal Frequency Division Multiplexing (OFDM) to exploit the TVWS spectrum effectively. The combination of the OFDM and TVWS may be able to solve the problem of frequency depletion. However the TVWS transmitter must satisfy a strict transmission spectrum mask and reduce out-of-band emission to protect the primary users. The digital convolution filter is one way of reducing the out-of-band emission. Unfortunately, implementing a strict mask needs a large number of filter taps, which causes high implementation complexity. Time-domain windowing is another effective approach. This scheme reduces out-of-band emission with low complexity but at the price of shortening the effective guard interval. This paper proposes a mechanism that jointly uses these two schemes for out-of-band emission reduction. Moreover, the appropriate windowing duration design is proposed in terms of both the out-of-band emission suppression and throughput performance for all mandatory mode of IEEE 802.11af system. The proposed time-domain windowing design reduces the number of multiplier by 96.5%.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.875/_p
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@ARTICLE{e97-b_4_875,
author={Keiichi MIZUTANI, Zhou LAN, Hiroshi HARADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Time-Domain Windowing Design for IEEE 802.11af Based TVWS-WLAN Systems to Suppress Out-of-Band Emission},
year={2014},
volume={E97-B},
number={4},
pages={875-885},
abstract={This paper proposes out-of-band emission reduction schemes for IEEE 802.11af based Wireless Local Area Network (WLAN) systems operating in TV White Spaces (TVWS). IEEE 802.11af adopts Orthogonal Frequency Division Multiplexing (OFDM) to exploit the TVWS spectrum effectively. The combination of the OFDM and TVWS may be able to solve the problem of frequency depletion. However the TVWS transmitter must satisfy a strict transmission spectrum mask and reduce out-of-band emission to protect the primary users. The digital convolution filter is one way of reducing the out-of-band emission. Unfortunately, implementing a strict mask needs a large number of filter taps, which causes high implementation complexity. Time-domain windowing is another effective approach. This scheme reduces out-of-band emission with low complexity but at the price of shortening the effective guard interval. This paper proposes a mechanism that jointly uses these two schemes for out-of-band emission reduction. Moreover, the appropriate windowing duration design is proposed in terms of both the out-of-band emission suppression and throughput performance for all mandatory mode of IEEE 802.11af system. The proposed time-domain windowing design reduces the number of multiplier by 96.5%.},
keywords={},
doi={10.1587/transcom.E97.B.875},
ISSN={1745-1345},
month={April},}
Copy
TY - JOUR
TI - Time-Domain Windowing Design for IEEE 802.11af Based TVWS-WLAN Systems to Suppress Out-of-Band Emission
T2 - IEICE TRANSACTIONS on Communications
SP - 875
EP - 885
AU - Keiichi MIZUTANI
AU - Zhou LAN
AU - Hiroshi HARADA
PY - 2014
DO - 10.1587/transcom.E97.B.875
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2014
AB - This paper proposes out-of-band emission reduction schemes for IEEE 802.11af based Wireless Local Area Network (WLAN) systems operating in TV White Spaces (TVWS). IEEE 802.11af adopts Orthogonal Frequency Division Multiplexing (OFDM) to exploit the TVWS spectrum effectively. The combination of the OFDM and TVWS may be able to solve the problem of frequency depletion. However the TVWS transmitter must satisfy a strict transmission spectrum mask and reduce out-of-band emission to protect the primary users. The digital convolution filter is one way of reducing the out-of-band emission. Unfortunately, implementing a strict mask needs a large number of filter taps, which causes high implementation complexity. Time-domain windowing is another effective approach. This scheme reduces out-of-band emission with low complexity but at the price of shortening the effective guard interval. This paper proposes a mechanism that jointly uses these two schemes for out-of-band emission reduction. Moreover, the appropriate windowing duration design is proposed in terms of both the out-of-band emission suppression and throughput performance for all mandatory mode of IEEE 802.11af system. The proposed time-domain windowing design reduces the number of multiplier by 96.5%.
ER -
English
