Probability-Based Optimization of Inter-Sensing Duration and Power Control in Cognitive Radio

被引：22

作者：

Zhou, Xiangwei ^{[1
]}

Ma, Jun ^{[1
]}

Li, Geoffrey Ye ^{[1
]}

Kwon, Young Hoon ^{[2
]}

Soong, Anthony C. K. ^{[2
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

[2] Huawei Technol, Wireless Adv Res, Plano, TX 75075 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2009年 / 8卷 / 10期

基金：

美国国家科学基金会;

关键词：

Bandwidth efficiency; cognitive radio; optimization; power control; spectrum sensing;

D O I：

10.1109/TWC.2009.081061

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Probability-based strategies are proposed in this letter to determine the optimal inter-sensing duration and power control for cognitive radio (CR). With utilization of the statistics of licensed band occupancy, appropriate inter-sensing duration is determined to capture the recurrence of spectrum opportunity in time when the licensed signal is detected, or to achieve the maximum spectrum efficiency under a certain level of interference with licensed communication when the licensed signal is declared absent. Transmit power is varied dynamically according to the non-interfering probability at each sample so as to increase the transmission rate and decrease the interference power.

引用

页码：4922 / 4927

页数：6

共 15 条

[1]

[Anonymous], 1991, ELEMENTS INFORM THEO

[2]

[Anonymous], P INT C COGN RAD OR

[3] Implementation issues in spectrum sensing for cognitive radios [J].

Cabric, D ;

Mishra, SM ;

Brodersen, RW .

CONFERENCE RECORD OF THE THIRTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2, 2004, :772-776

[4] Cognitive radio: Brain-empowered wireless communications [J].

Haykin, S .

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 2005, 23 (02) :201-220

[5]

Hoang A. T., 2006, IEEE 64 VEH TECHN C, P1

[6]

Hoang AT, 2007, GLOB TELECOMM CONF, P3128

[7] Efficient discovery of spectrum opportunities with MAC-layer sensing in cognitive radio networks [J].

Kim, Hyoil ;

Shin, Kang G. .

IEEE TRANSACTIONS ON MOBILE COMPUTING, 2008, 7 (05) :533-545

[8] Optimal Spectrum Sensing Framework for Cognitive Radio Networks [J].

Lee, Won-Yeol ;

Akyildiz, Ian. F. .

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2008, 7 (10) :3845-3857

[9]

MA J, 2008, P IEEE ICC BEIJ CHIN, P3416

[10]

Moon T.K., 2000, Mathematical Methods and Algorithms for Signal Processing

← 1 2 →