Energy-Efficient Resource Allotment for OFDM-Based Cognitive Radio Networks

  • Nehul Mathur RGPV Bhopal
  • Roma Vamne RGPV Bhopal
Keywords: Digital Image, Lossless Image, Cryptography, Watermarking

Abstract

Orthogonal frequency-division multiplexing (OFDM), is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. Recently, some schemes have proposed to reduce the number of DFT blocks required. OFDM meets the LTE requirement for spectrum flexibility and enables cost-efficient solutions for vast carriers with high peak rates. Ultra-wideband characteristics are well-suited to short-distance applications, such as PC peripherals. Adaptive resource allocation (RA) for the OFDM systems has been studied extensively for more than a decade. A survey can be found in and references therein. For the arising OFDM-based CR, a system, adaptive RA has also attracted much attention starting from the surfacing of the CR and with the references therein provides a comprehensive survey. For single SU case, RA in an OFDM-based CR system degenerates into power distribution. Due to low emission levels permitted by regulatory agencies, UWB systems tend to be shortrange indoor applications. We studied the energyefficient resource allocation in an OFDM-based CR network, which is an urgent task for green communication design.

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References

[1]. Shaowei Wang, Mengyao Ge, and Wentao Zhao, “Energy-Efficient Resource Allocation for OFDMBased Cognitive Radio Networks” IEEE transactions on communications, vol. 61, no. 8, Aug 2013.
[2]. S. Wang, F. Huang, and C. Wang, “Adaptive proportional fairness resource allocation for OFDM-based cognitive radio networks,” Wireless Networks, vol. 19, no. 3, pp. 273–284, Mar. 2013.
[3]. “Resource allocation for heterogeneous cognitive radio networks with imperfect spectrum sensing,” IEEE J. Sel. Areas Communication, vol. 31, no. 3, pp. 464–475, 2013.
[4]. M. Ge and S. Wang, “Fast optimal resource allocation is possible for multiuser OFDM-based cognitive radio networks with heterogeneous services,” IEEE Trans. Wireless Communication, vol. 11, no. 4, pp. 1500–1509, Apr. 2012.
Published
2020-08-25
How to Cite
Mathur, N., & Vamne, R. (2020). Energy-Efficient Resource Allotment for OFDM-Based Cognitive Radio Networks. International Journal of Advanced Computer Technology, 9(4), 07-09. Retrieved from https://ijact.org/index.php/ijact/article/view/57
Section
Articles