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Power Allocation in OFDM Based Cognitive Radio System

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Communications, Signal Processing, and Systems

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 202))

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Abstract

In this chapter, we investigate one suboptimal power allocation scheme for an OFDM based cognitive radio system. Optical power allocation for secondary user in OFDM subcarrier is complex since it has a power as well as an interference constraint. Mathematical analysis shows that interference between primary and secondary in OFDM based system depends on theirs spectral distance. In our suboptimal method we consider the spectral distance between the secondary and primary user and modify the traditional water-filling algorithm. By applying our suboptimal power allocation method, it is possible that we can get good performance comparable to the optimal scheme. We compare our method with traditional power allocations schemes like equal power allocation and water filling power allocation. Result shows that distance dependent modified water filling (DDMWF) scheme can achieve the highest data rate for the cognitive radio based Secondary user.

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References

  1. Federal Communications Commission (2002) Spectrum Policy Task Force Trans Rep. ET Docket no. 02–135, Nov 2002

    Google Scholar 

  2. Kang X, Liang Y, Nallanathan A, Garg HK, Zhang R (2009) Optimal power allocation for fading channels in cognitive radio networks: ergodic capacity and outage capacity. IEEE Trans Wireless Commun 8(2):940–950

    Article  Google Scholar 

  3. Chai CC, Che YH (2010) Power control for cognitive radios in Nakagami fading channels with outage probability requirement. In: IEEE Global telecommunication conference (GLOBECOM 2010), Miami, Florida, 6–10 Dec 2010, pp 1–5

    Google Scholar 

  4. Shahrokh H, Mohamed-pour K (2010) Sub-optimal power allocation in MIMO-OFDM based cognitive radio networks. In: 6th International conference wireless communication networking and mobile computing (WiCOM), Chengdu, China, 23–25 Sept 2010, pp 1–5

    Google Scholar 

  5. Hu Y, Kuo G (2007) Space-time-frequency domain water-filling in MIMO-OFDM fading system. In: IEEE conference on vehicular technology, Baltimore, MD, 22–25 Apr 2007, pp. 2475–2480

    Google Scholar 

  6. Tiwary PK, Maskey N, Khakurel S, Sachdeva G (2010) Effects of co-channel interference in WLAN and cognitive radio based approach to minimize it. In: International conference on advances in recent technologies in communication and computing (ARTCom), Kottayam, India, 2010, 16–17 Oct 2010, pp 158–160

    Google Scholar 

  7. Almalfouh SM, Stüber GL (2011) Interference-aware radio resource allocation in OFDMA-based cognitive radio networks. IEEE Trans Veh Technol 60(4):1699–1713

    Article  Google Scholar 

  8. Babaei A, Jabbari B (2010) Throughput optimization in cognitive random wireless ad hoc networks. In: IEEE conference on global telecommunication (GLOBECOM 2010), Miami, Florida, 6–10 Dec 2010, pp 1–5

    Google Scholar 

  9. Bansal G, Hossain MJ, Bhargava VK (2008) Optimal and suboptimal power allocation schemes for OFDM-based cognitive radio systems. IEEE Trans Wireless Commun 7(11):4710–4718

    Article  Google Scholar 

  10. Jian W, Longxiang Y, Xu L (2011) Subcarrier and power allocation in OFDM based cognitive radio systems. In: International conference on intelligent computer technology and automation (ICICTA), Shenzhen, China, vol 2, 28–29 Mar 2011, pp 728–731

    Google Scholar 

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Acknowledgments

This work was supported in part by National Science Foundation (NSF) under grant CNS-0964713, CNS-1050618 and office of Naval research (ONR) under grant N00014-11-1-0071 and N00014-11-1-0865.

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Authors and Affiliations

  1. Department of Electrical Engineering, University of Texas at Arlington, Arlington, TX, USA

    Ishrat Maherin & Qilian Liang

Authors
  1. Ishrat Maherin
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  2. Qilian Liang
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Corresponding author

Correspondence to Qilian Liang .

Editor information

Editors and Affiliations

  1. University of Texas at Arlington, 416 Yates St, Rm 518, Box 19016, Arlington, 76019-0016, Texas, USA

    Qilian Liang

  2. College of Physical and Electronic Infor, Tianjin Normal University, Bingshui West Road, XiQing District, Tianjin, 300387, China, People's Republic

    Wei Wang

  3. College of Physical and Electronic Infor, Tianjin Normal University, Bingshui West Road, XiQing District, Tianjin, 300387, China, People's Republic

    Jiasong Mu

  4. School of electronic engineering, University of Electronic Science and Tec, Xiyuan Road, Gaoxin District, Chengdu, 611731, China, People's Republic

    Jing Liang

  5. College of Physical and Electronic Infor, Tianjin Normal University, Bingshui West Road, XiQing District, Tianjin, 300387, China, People's Republic

    Baoju Zhang

  6. School of Electronic Engineering, University of Electronic Science and Tec, Xiyuan Road, Gaoxin district, Chengdu, 611731, China, People's Republic

    Yiming Pi

  7. School of Information and Communication, Beijing University of Posts and Telecomm, Xitucheng Road 10, Beijing, 100876, China, People's Republic

    Chenglin Zhao

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© 2012 Springer Science+Business Media New York

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Maherin, I., Liang, Q. (2012). Power Allocation in OFDM Based Cognitive Radio System. In: Liang, Q., et al. Communications, Signal Processing, and Systems. Lecture Notes in Electrical Engineering, vol 202. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-5803-6_14

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  • DOI: https://doi.org/10.1007/978-1-4614-5803-6_14

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  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-5802-9

  • Online ISBN: 978-1-4614-5803-6

  • eBook Packages: EngineeringEngineering (R0)

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