CFP last date
20 December 2024
Call for Paper
January Edition
IJCA solicits high quality original research papers for the upcoming January edition of the journal. The last date of research paper submission is 20 December 2024

Submit your paper
Know more
The week's pick
Responsive image
Improved Shuffled Frog Leaping Algorithm with Self-Adaptive Shuffling for Fuzzy Logic PD+G Controller Optimization in Robotic Manipulators

Duc Hoang Nguyen
Random Articles
Reseach Article

Energy Efficient and Subcarrier Allocation for OFDMA based Cooperative Relay Networks

by Vijayabharathi.g, Vijayalakshmi.a
journal cover thumbnail

International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 47 - Number 20
Year of Publication: 2012
Authors: Vijayabharathi.g, Vijayalakshmi.a
10.5120/7308-0525

Vijayabharathi.g, Vijayalakshmi.a . Energy Efficient and Subcarrier Allocation for OFDMA based Cooperative Relay Networks. International Journal of Computer Applications. 47, 20 ( June 2012), 45-49. DOI=10.5120/7308-0525

@article{ 10.5120/7308-0525,
author = { Vijayabharathi.g, Vijayalakshmi.a },
title = { Energy Efficient and Subcarrier Allocation for OFDMA based Cooperative Relay Networks },
journal = { International Journal of Computer Applications },
issue_date = { June 2012 },
volume = { 47 },
number = { 20 },
month = { June },
year = { 2012 },
issn = { 0975-8887 },
pages = { 45-49 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume47/number20/7308-0525/ },
doi = { 10.5120/7308-0525 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T20:42:24.573530+05:30
%A Vijayabharathi.g
%A Vijayalakshmi.a
%T Energy Efficient and Subcarrier Allocation for OFDMA based Cooperative Relay Networks
%J International Journal of Computer Applications
%@ 0975-8887
%V 47
%N 20
%P 45-49
%D 2012
%I Foundation of Computer Science (FCS), NY, USA
Abstract

Energy efficient wireless communication is important for battery constrained mobile devices. For mobile devices in a cellular system, uplink power consumption dominates the wireless power budget because of RF power requirements for reliable transmission over long distances. In this work we developed a low-complexity subcarrier-power allocation and relay selection scheme has been developed for maximizing energy efficiency per user in an Orthogonal Frequency Division Multiple Access (OFDMA) cooperative relay network, using full channel state information (CSI), which is available at both relay and BS nodes. The previous works in this area focused on optimizing energy efficiency by maximizing the instantaneous bits-per-Joule metric through Equal-Power Allocation (EPA) schemes resulted in significant energy savings for uplink cellular OFDMA transmissions. It also shows that the proposed scheme has significant improvement on the energy efficiency performance as compared with EPA schemes which allocate equal transmit power to the assigned subcarriers. The simulation results show that the proposed scheme can achieve better performance with less computational complexity as compared to the exhaustive search scheme.

References
  1. Wenbing Dang, Jianwei Huang, "Subcarrier-pair based resource allocation for cooperative AF multi-relay OFDM systems", IEEE transactions on wireless communications, vol. 9, no. 5 ,may 2010.
  2. YinRui ,Zhang Yu, Zhang Jietao Yu, Guanding and Zhaoyang," Joint resource allocation in multiple channels,multiple relays systems",IEEE transactions on wireless communications and networking conference, april 2010.
  3. Y. Chen and S. Kishnore, "A game-theoretic analysis of decode and-forward user cooperation," IEEE trans. wireless communications, vol. 7, no. 5, pp. 1941–1951, may 2008.
  4. A. Host-Madsen and J. Zhang, "Capacity bounds and power allocation for wireless relay channels," Information Theory, IEEE transactions on, vol. 51, no. 6, pp. 2020–2040, june 2005.
  5. L. Vandendorpe, J. Louveaux, O. Oguz and A. Zaidi, "Rate-optimized power allocation for DF-relayed OFDM transmission under sum and individual power constraints,"EURASIP journal on wireless communications and networking, vol. 2009, article id 814278, 2009.
  6. R. Madan, N. B. Mehta, A. F. Molisch, and J. Zhang, "Energy-efficient cooperative relaying over fading channels with simple relay selection", IEEE trans. wireless commun. , vol. 7, no. 8, pp. 3013–3025, aug. 2008.
  7. Y. Li, B. Vucetic, Z. Zhou, and M. Dohler, "Distributed adaptive power allocation for wireless relay networks," IEEE trans. wireless commun. , vol. 6, pp. 948-958,mar. 2007.
  8. L. Vandendorpe, R. T. Duran, J. Louveaux, and A. Zaidi, "Power allocation for OFDM transmission with DF relaying," in proc. IEEE int. conf. commun. (icc), pp. 3795-3800, may 2008.
  9. Khoa T. Phan, Long Bao Le, Sergiy A. Vorobyov, and Tho Le-Ngoc, "Centralized and distributed power allocation in multi-user wireless relay networks," in proc. IEEE int. conf. commun. (ICC), may 2009.
  10. S. H. Nam, M. Vu, and V. Tarokh, "Relay selection methods for wireless cooperative communications," in proc. conf. on info. sciences and systems (CISS), 2008.
  11. Khoa T. Phan, Duy H. N. Nguyen, and Tho Le-Ngoc, "Joint power allocation and relay selection in cooperative networks,"in proc. IEEE global telecommun. conf. (GLOBECOM), 2009.
  12. A. Sendonaris, E. Erkip, and B. Aazhang, "User cooperation diversity, part I: system description," IEEE trans. commun. , vol. 51, no. 11, pp. 1927–1938, nov. 2003.
  13. G. Miao, N. Himayat, Y. Li, and D. Bormann, "Energy-efficient design in wireless OFDMA," in Proc. ICC 2008, 2008.
  14. A. Bletsas, A. Khisti, D. P. Reed, A. Lippman, "A simple cooperative. diversity method based on network path selection" IEEE journal on selected areas in communications, vol. 24, no. 3, pp. 659-672, mar. 2006
Index Terms

Computer Science
Information Sciences

Keywords

Energy Efficiency Ofdma Bits Per Joule Equal Power Control Channel State Information

Powered by PhDFocusTM