Quality-of-Service Driven Power and Rate Control in Mobile Wireless Networks Conference Paper uri icon

abstract

  • We propose a Quality-of-Service (QoS) driven power- and rate-control scheme in mobile wireless networks. Specifically, the proposed scheme aims at maximizing the system throughput subject to a given delay QoS constraint. Over the block fading channel, we derive the optimal adaptation policy by integrating information theory with the concept of effective capacity. The analyses demonstrate that there exists a fundamental tradeoff between spectral efficiency and QoS provisioning. When the QoS constraint is loose, the optimal power control policy converges to the well-known water-filling scheme, where the Shannon capacity can be achieved. On the other hand, when the QoS constraint is stringent, the optimal policy converges to the total channel inversion such that the system operates with a constant service rate. 2006 IEEE.

name of conference

  • 2006 IEEE International Conference on Communications

published proceedings

  • 2006 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-12

author list (cited authors)

  • Tang, J., & Zhang, X. i.

citation count

  • 6

complete list of authors

  • Tang, Jia||Zhang, Xi

publication date

  • June 2006