Maximizing Effective Capacity Over Wireless Links Under Average and Peak Power Constraints Conference Paper uri icon


  • We propose the quality-of-service (QoS) driven power allocation scheme for wireless links under average and peak power constraints. By integrating information theory with the principle of effective capacity, our proposed scheme aims at maximizing the system throughput subject to a given delay-QoS constraint. Over the block fading channel, we derive the optimal power allocation scheme to maximize the effective capacity. The analyses and numerical results show that our optimal power allocation scheme converges to the despicking water-filling scheme when the QoS constraint becomes very loose. On the other hand, our optimal power allocation scheme reduces to the dispicking channel inversion scheme when the QoS constraint gets very stringent. Two non-optimal power allocation schemes are described for comparison purposes. We also propose and evaluate the independent optimization for the multicarrier system. 2012 IEEE.

name of conference

  • 2012 IEEE International Conference on Communications (ICC)

published proceedings


author list (cited authors)

  • Cheng, W., Zhang, X. i., & Zhang, H.

citation count

  • 5

complete list of authors

  • Cheng, Wenchi||Zhang, Xi||Zhang, Hailin

publication date

  • June 2012