講演名 2010-01-22
On the Coexistence of Cognitive Radio Systems
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抄録(和)
抄録(英) In this paper, we study the coexistence issue of cognitive radio system (CRS) including selfcoexistence among secondary users (SUs) and the coexistence between primay users (PUs) and SUs. The selfcoexistence addresses the sharing of identified spectrum opportunity among SUs. The coexistence between SUs and PUs addresses the interference from SUs to PUs. To parameterize these issues, we first introduce a new parameter named as quality of coexistence (QoC), which is defined as the quality of SU transmission devided by the negative interference to PUs. Assuming the a time slot of spectrum opportunity has been found by multiple SUs, we partition this time slot to multiple SUs to maximize the QoC. This leads to a good spectrum usage among SUs and minimized interference to PUs. It is assumed that the SUs have multiple antennas and employ transmit power control (TPC). Numerical study shows that using the proposed method, the spectrum opportunity can be shared among multiple SUs while giving the minimum interference to the primary users (PUs). Results show that by properly allocation time slots to multiple SUs to share the spectrum opportunity, the QoC facotor can be increased by more than 20% which indicates a significant improvement of coexistence not only between SUs and PUs but also among SUs.
キーワード(和)
キーワード(英) Cognitive radio system (CRS) / coexistence / quality of coexistence (QoC) / transmit power control (TPC) / Rayleigh fading
資料番号 SR2009-87
発行日

研究会情報
研究会 SR
開催期間 2010/1/14(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
幹事氏名(和)
幹事氏名(英)
幹事補佐氏名(和)
幹事補佐氏名(英)

講演論文情報詳細
申込み研究会 Software Radio(SR)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) On the Coexistence of Cognitive Radio Systems
サブタイトル(和)
キーワード(1)(和/英) / Cognitive radio system (CRS)
第 1 著者 氏名(和/英) / Chen SUN
第 1 著者 所属(和/英)
New Generation Wireless Communications Research Center National Institute of Information and Communications Technology (NICT)
発表年月日 2010-01-22
資料番号 SR2009-87
巻番号(vol) vol.109
号番号(no) 383
ページ範囲 pp.-
ページ数 5
発行日