講演名 2009-07-30
Transmission Schemes of Cognitive Radio System with Power Control over Rayleigh Fading
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抄録(和)
抄録(英) This paper addresses the transmission schemes of cognitive radio system (CRS) with power control. An adaptive power control scheme in Rayleigh fading channel is proposed. The transmit power of a secondary user (SU) is adjusted in Rayleigh fading to maximize the constant output signal-to-noise ratio (SNR) at an SU receiver while keeping the interference to a primary user (PU) under given constraints. To calculate the maximum constant output SNR at the SU receiver under the interference constraints of the PUs, we develop an analytical model for the distribution of the interference to PUs while considering the detection performance at the SUs. The analytical model takes into account of the use of multiple antennas and includes a single antenna scenario as a special case. The CRS transmission with the proposed adaptive power control scheme is compared with the transmission using a straightforward fixed power control scheme for the CRS in terms of bit-error-rate (BER). Results show that the proposed adaptive power control scheme outperforms the fixed power control scheme. For example, when the BER is 10^<-3> the adaptive power control scheme with two transmit antennas and two receive antennas has a 3-dB improvement in SNR as compared with the fixed power control scheme.
キーワード(和)
キーワード(英) Cognitive radio / power control / interference constraint / spectrum sensing / energy detection (ED) / selective sensing / Rayleigh fading / maximum ratio combining (MRC)
資料番号 SR2009-43
発行日

研究会情報
研究会 SR
開催期間 2009/7/22(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) Transmission Schemes of Cognitive Radio System with Power Control over Rayleigh Fading
サブタイトル(和)
キーワード(1)(和/英) / Cognitive radio
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 2009-07-30
資料番号 SR2009-43
巻番号(vol) vol.109
号番号(no) 155
ページ範囲 pp.-
ページ数 8
発行日