多細胞群播服務之波束成形與功率配置技術

Multicell Multicast with Coordinated Beamforming and Power Allocation

廖書玉(Shu-yu Liao)

指導教授 ： 李學智

共同指導教授 ： 蘇炫榮(Hsuan-Jung Su)

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2013年)

https://doi.org/10.6342/NTU.2013.11088

摘要

無資料

關鍵字

群播 ； 協調波束成形 ； 功率配置 ； 下行上行對偶性質 ； 迭代演算

並列摘要

This thesis considers a multicell network with multigroup multicast services occupying the same radio (i.e., time-frequency) resource. To improve the quality of service (QoS) and reduce the interference among the multicast groups, coordinated beamforming and power allocation among the cells are employed. By exploiting the concept of downlink-uplink duality, an iterative approach is taken to jointly design the group maximum signal-to-interference-plus-noise-ratio (SINR) beamforming and power allocation under the per-cell power constraints. We study two QoS-oriented optimization problems. The first problem, which is referred to as P1, is to maximize the minimum balanced level among multicast groups under per-cell power constraints, where the balanced level is defined as the ratio of the received SINR to the target (i.e., required) SINR. The latter problem, referred to as P2, is to minimize the total transmit power of coordinated cells under the worst balanced level and per-cell power constraints. Simulation results demonstrate the advantage of coordinated beamforming over the conventional single frequency network (SFN) multicast.

並列關鍵字

multicast ； coordinated beamforming ； power allocation ； downlink-uplink duality ； iterative algorithm

參考文獻

[1] “Multimedia broadcast/multicast service (MBMS); architecture and functional description,” Technical Specification Group Services and System Aspects, Tech. Rep. TS 23.246 v6.10.0, Jun. 2006.

[2] IEEE Standard for Local and Metropolitan Area Networks Part 16:Air Interface for Fixed and Mobile Broadband Wireless Access Systems, IEEE Std. 802.16, 2009.

[3] “Evolved universal terrestrial radio access (E-UTRA) and evolved universal terrestrial radio access network (E-UTRAN); overall description; stage 2,” Technical Specification Group Services and System Aspects, Tech. Rep. TS 36.300 v11.5.0, Apr. 2013.

[4] N. D. Sidiropoulos, T. N. Davidson, and Z.-Q. Luo, “Transmit beamforming for physical-layer multicasting,” IEEE Trans. Signal Process., vol. 54, no. 6, pp. 2239–2251, Jun. 2006.

[5] E. Karipidis, N. D. Sidiropoulos, and Z.-Q. Luo, “Quality of service and max-min fair transmit beamforming to multiple cochannel multicast groups,” IEEE Trans. Signal Process., vol. 56, no. 3, pp. 1268–1279, Mar. 2008.