Space-time diversity-enhanced QoS provisioning for real-time service over MC-DS-CDMA based wireless networks Academic Article uri icon


  • In order to support the quality-of-service (QoS) requirements for real-time traffic over broadband wireless networks, advanced techniques such as space-time diversity (STD) and multicarrier direct-sequence code division multiple access (MC-DS-CDMA) are implemented at the physical layer. However, the employment of such techniques evidently affects the QoS provisioning algorithms at the medium access control (MAC) layer. In this paper, we propose a space-time infrastructure and develop a set of cross-layer real-time QoS-provisioning algorithms for admission control, scheduling, and subchannel-allocations. We analytically map the parameters characterizing the STD onto the admission-control region guaranteeing the real-time QoS. Our analytical analyses show that the proposed algorithms can effectively support real-time QoS provisioning. Also presented are numerical solutions and simulation results showing that the STD can significantly improve the QoS provisioning for real-time services over wireless networks. Copyright 2007 John Wiley & Sons, Ltd.

published proceedings


author list (cited authors)

  • Zhang, X. i., Tang, J., & Chen, H.

citation count

  • 1

complete list of authors

  • Zhang, Xi||Tang, Jia||Chen, Hsiao-Hwa

publication date

  • August 2008