Power and Subcarrier Allocation for Multicast Services in Distributed Antenna Systems

This paper focuses on the resource allocation of multicast services in Distributed Antenna Systems (DAS). First of all, the capacity limitation of conventional multicast ransmission in DAS is analyzed. Then a resource allocation algorithm for multicast services is proposed to improve the system throughput of DAS with Quality of Services (QoS) guarantees. The proposed algorithm includes three steps: Power Assignment, Conservative Allocation and Greedy Step. Simulation results show that the proposed algorithm significantly outperforms the conventional multicast transmission methods in throughput while guaranteeing the minimum data rates of all users as well. Moreover, simulation results also show that the proposed algorithm can exceed the capacity upper bound of conventional multicast scheme when the user number is larger than 50, which indicates the proposed algorithm can overcome the capacity limitation of conventional multicast transmission in DAS.

[1]  Laurence B. Milstein,et al.  CDMA overlay situations for microcellular mobile communications , 1995, IEEE Trans. Commun..

[2]  Mamoru Sawahashi,et al.  Downlink transmission of broadband OFCDM Systems-part I: hybrid detection , 2005, IEEE Transactions on Communications.

[3]  Arogyaswami Paulraj,et al.  Outage performance of the distributed antenna systems in a composite fading channel , 2002, Proceedings IEEE 56th Vehicular Technology Conference.

[4]  Américo Correia,et al.  Distributed Antenna Cellular System for Transmission of Broadcast/Multicast Services , 2007, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring.

[5]  Ming Chen,et al.  Antenna location design for distributed antenna systems with selective transmission , 2009, 2009 International Conference on Wireless Communications & Signal Processing.

[6]  Eryk Dutkiewicz,et al.  Energy Efficient Integrated Scheduling of Unicast and Multicast Traffic in 802.16e WMANs , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[7]  Jeonghoon Mo,et al.  Resource Allocation for Multicast Services in Multicarrier Wireless Communications , 2008, IEEE Trans. Wirel. Commun..

[8]  Andrea J. Goldsmith,et al.  Degrees of freedom in adaptive modulation: a unified view , 2001, IEEE Trans. Commun..

[9]  Jeonghoon Mo,et al.  Resource Allocation for Multicast Services in Multicarrier Wireless Communications , 2006, Proceedings IEEE INFOCOM 2006. 25TH IEEE International Conference on Computer Communications.

[10]  Américo Correia,et al.  Multi-Resolution Broadcast/Multicast Systems for MBMS , 2007, IEEE Transactions on Broadcasting.

[11]  Ming Chen,et al.  Antenna location design for generalized distributed antenna systems , 2009, IEEE Communications Letters.

[12]  Jun Chen,et al.  Performance of wideband CDMA systems with complex spreading and imperfect channel estimation , 2001, IEEE J. Sel. Areas Commun..