Spectral and Energy Efficiency Optimization Through Coordinated Transmission for Downlink Cloud Radio Access Networks

  • Ying Sun
  • Yang WangEmail author
  • Gang Wu
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 463)


Cloud-based Radio Access Network (C-RAN) is capable of implementing flexible antenna installation and centralized processing to facilitate dense deployment of cells in the era of mobile traffic explosion. This paper investigates into the spectral and energy efficiency trade-off of C-RAN, and proposes optimized downlink coordinated transmission to enhance spectral efficiency (SE) and energy efficiency (EE). SE optimization is formulated as a sum rate maximization problem and solved by Lagrange multiplier method. EE optimization is formulated as a multi-objective function, and is then transformed into single objective function, which is solved by numerical search method. Simulations are conducted under different pre-coding configurations, and results demonstrate the effectiveness of proposed methods.


Small cell Cloud-RAN Energy efficiency Coordination 


  1. 1.
    Checko, A., Christiansen, H.L., Yan, Y., Scolari, L., Kardaras, G., Berger, M.S., Dittmann, L.: IEEE Commun. Surv. Tutorials 17(1), 405 (2015). Scholar
  2. 2.
    Beylerian, A., Ohtsuki, T.: EURASIP J. Wirel. Commun. Netw. 2016(1), 12 (2016).
  3. 3.
    Wang, K., Zhao, M., Zhou, W.: 2014 IEEE Global Communications Conference, pp. 2308–2313 (2014).
  4. 4.
    Beyene, Y.D., Jntti, R., Ruttik, K.: IEEE Access 2, 1205 (2014).
  5. 5.
    Sabella, D., de Domenico, A., Katranaras, E., Imran, M.A., di Girolamo, M., Salim, U., Lalam, M., Samdanis, K., Maeder, A.: IEEE Access 2, 1586 (2014). Scholar
  6. 6.
    Rao, X., Lau, V.K.N.: IEEE Trans. Signal Process. 63(4), 1056 (2015). Scholar
  7. 7.
    de la Oliva, A., Hernandez, J.A., Larrabeiti, D., Azcorra, A.: IEEE Commun. Mag. 54(2), 152 (2016). Scholar
  8. 8.
    Huq, K.M.S., Mumtaz, S., Rodriguez, J., Aguiar, R.L.: 2014 IEEE Symposium on Computers and Communications (ISCC), pp. 1–5 (2014).
  9. 9.
    Domenico, A.D., Strinati, E.C., Capone, A.: Comput. Commun. 37(1), 5 (2014)Google Scholar
  10. 10.
    Bjrnson, E., Sanguinetti, L., Hoydis, J., Debbah, M.: IEEE Trans. Wirel. Commun. 14(6), 3059 (2015).
  11. 11.
    He, C., Sheng, B., Zhu, P., You, X., Li, G.Y.: IEEE J. Sel. Areas Commun. 31(5), 894 (2013). Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Shenzhen Graduate School of Harbin Institute of TechnologyShenzhenChina
  2. 2.Guangzhou Power Supply Co. Ltd.GuangzhouChina

Personalised recommendations