Real-time white spectrum recognition for cognitive radio networks over TV white spaces

Myeongyu Kim, Youchan Jeon, Haesoo Kim, Taekook Kim, Jinwoo Park

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A key technical challenge in TV white spaces is the efficient spectrum usage without interfering with primary users. This paper considers available spectrum discovery scheme using in-band sensing signal to support super Wi-Fi services effectively. The proposed scheme in this paper adopts non-contiguous orthogonal frequency-division multiplexing (NC-OFDM) to utilize the fragmented channel in TV white space due to microphones while this channel cannot be used in IEEE 802.11af. The proposed solution is a novel available spectrum discovery scheme by exploiting the advantages of a sensing signaling. The proposed method achieves considerable improvement in throughput and delay time. The proposed method can use more subcarriers for transmission by applying NC-OFDM in contrast with the conventional IEEE 802.11af standard. Moreover, the increased number of wireless microphones (WMs) hardly affects the throughput of the proposed method because our proposal only excludes some subcarriers used by WMs. Additionally, the proposed method can cut discovery time down to under 10 ms because it can find available channels in real time by exchanging sensing signal without interference to the WM.

Original languageEnglish
Pages (from-to)238-244
Number of pages7
JournalJournal of Communications and Networks
Volume16
Issue number2
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Microphones
Cognitive radio
Orthogonal frequency division multiplexing
Throughput
Wi-Fi
Signal interference
Time delay

Keywords

  • Cognitive radio
  • Super Wi-Fi
  • TV white space
  • Wireless microphone

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems

Cite this

Real-time white spectrum recognition for cognitive radio networks over TV white spaces. / Kim, Myeongyu; Jeon, Youchan; Kim, Haesoo; Kim, Taekook; Park, Jinwoo.

In: Journal of Communications and Networks, Vol. 16, No. 2, 01.01.2014, p. 238-244.

Research output: Contribution to journalArticle

Kim, Myeongyu ; Jeon, Youchan ; Kim, Haesoo ; Kim, Taekook ; Park, Jinwoo. / Real-time white spectrum recognition for cognitive radio networks over TV white spaces. In: Journal of Communications and Networks. 2014 ; Vol. 16, No. 2. pp. 238-244.
@article{7ce402ef3d304ddaad573d4be10dfa65,
title = "Real-time white spectrum recognition for cognitive radio networks over TV white spaces",
abstract = "A key technical challenge in TV white spaces is the efficient spectrum usage without interfering with primary users. This paper considers available spectrum discovery scheme using in-band sensing signal to support super Wi-Fi services effectively. The proposed scheme in this paper adopts non-contiguous orthogonal frequency-division multiplexing (NC-OFDM) to utilize the fragmented channel in TV white space due to microphones while this channel cannot be used in IEEE 802.11af. The proposed solution is a novel available spectrum discovery scheme by exploiting the advantages of a sensing signaling. The proposed method achieves considerable improvement in throughput and delay time. The proposed method can use more subcarriers for transmission by applying NC-OFDM in contrast with the conventional IEEE 802.11af standard. Moreover, the increased number of wireless microphones (WMs) hardly affects the throughput of the proposed method because our proposal only excludes some subcarriers used by WMs. Additionally, the proposed method can cut discovery time down to under 10 ms because it can find available channels in real time by exchanging sensing signal without interference to the WM.",
keywords = "Cognitive radio, Super Wi-Fi, TV white space, Wireless microphone",
author = "Myeongyu Kim and Youchan Jeon and Haesoo Kim and Taekook Kim and Jinwoo Park",
year = "2014",
month = "1",
day = "1",
doi = "10.1109/JCN.2014.000035",
language = "English",
volume = "16",
pages = "238--244",
journal = "Journal of Communications and Networks",
issn = "1229-2370",
publisher = "Korean Institute of Communication Sciences",
number = "2",

}

TY - JOUR

T1 - Real-time white spectrum recognition for cognitive radio networks over TV white spaces

AU - Kim, Myeongyu

AU - Jeon, Youchan

AU - Kim, Haesoo

AU - Kim, Taekook

AU - Park, Jinwoo

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A key technical challenge in TV white spaces is the efficient spectrum usage without interfering with primary users. This paper considers available spectrum discovery scheme using in-band sensing signal to support super Wi-Fi services effectively. The proposed scheme in this paper adopts non-contiguous orthogonal frequency-division multiplexing (NC-OFDM) to utilize the fragmented channel in TV white space due to microphones while this channel cannot be used in IEEE 802.11af. The proposed solution is a novel available spectrum discovery scheme by exploiting the advantages of a sensing signaling. The proposed method achieves considerable improvement in throughput and delay time. The proposed method can use more subcarriers for transmission by applying NC-OFDM in contrast with the conventional IEEE 802.11af standard. Moreover, the increased number of wireless microphones (WMs) hardly affects the throughput of the proposed method because our proposal only excludes some subcarriers used by WMs. Additionally, the proposed method can cut discovery time down to under 10 ms because it can find available channels in real time by exchanging sensing signal without interference to the WM.

AB - A key technical challenge in TV white spaces is the efficient spectrum usage without interfering with primary users. This paper considers available spectrum discovery scheme using in-band sensing signal to support super Wi-Fi services effectively. The proposed scheme in this paper adopts non-contiguous orthogonal frequency-division multiplexing (NC-OFDM) to utilize the fragmented channel in TV white space due to microphones while this channel cannot be used in IEEE 802.11af. The proposed solution is a novel available spectrum discovery scheme by exploiting the advantages of a sensing signaling. The proposed method achieves considerable improvement in throughput and delay time. The proposed method can use more subcarriers for transmission by applying NC-OFDM in contrast with the conventional IEEE 802.11af standard. Moreover, the increased number of wireless microphones (WMs) hardly affects the throughput of the proposed method because our proposal only excludes some subcarriers used by WMs. Additionally, the proposed method can cut discovery time down to under 10 ms because it can find available channels in real time by exchanging sensing signal without interference to the WM.

KW - Cognitive radio

KW - Super Wi-Fi

KW - TV white space

KW - Wireless microphone

UR - http://www.scopus.com/inward/record.url?scp=84900852684&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84900852684&partnerID=8YFLogxK

U2 - 10.1109/JCN.2014.000035

DO - 10.1109/JCN.2014.000035

M3 - Article

AN - SCOPUS:84900852684

VL - 16

SP - 238

EP - 244

JO - Journal of Communications and Networks

JF - Journal of Communications and Networks

SN - 1229-2370

IS - 2

ER -