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Resource allocation algorithm with limited feedback for multicast single frequency networks
  • ISSN号:1673-5447
  • 期刊名称:《中国通信:英文版》
  • 时间:0
  • 分类:TN93[电子电信—信号与信息处理;电子电信—信息与通信工程] TB123[理学—力学;理学—工程力学;一般工业技术]
  • 作者机构:[1]MOE Key Laboratory of Universal Wireless Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 相关基金:Project supported by the National Natural Science Foundation of China (Nos. 60972076 and 61072052) and the National Science and Technology Major Project, China (No. 2010ZX03003-004-03)
中文摘要:

单个频率网络(SFN ) 能提供多媒体广播多点传送在一个大范围区域上的服务。然而, SFN 的申请被大量反馈仍然限制。因此,我们基于有限反馈建议一个 multicast 资源分配计划当保证服务(QoS ) 的质量得到即时服务的要求时,最大化全部的率。在这个计划,我们设计一个用户反馈控制算法有效地减少反馈负担。算法决定报告隧道应该说信息到哪个底驻扎用户。我们然后提出联合副载波和力量分配问题并且发现它有高复杂性。因此,我们首先在相等的力量的假设下面散布副载波并且开发比例的分配策略完成在公平和 QoS 之间的折衷。下次,反复的充满水的力量分配被建议充分利用有限力量。到进一步的减少复杂性,力量反复的计划被介绍。当减少 68% 反馈开销时,模拟结果证明建议计划显著地改进系统性能。另外,力量反复的策略由于低复杂性在实践是合适的。

英文摘要:

The single frequency network (SFN) can provide a multimedia broadcast multicast service over a large coverage area. However, the application of SFN is still restricted by a large amount of feedback. Therefore, we propose a multicast resource allocation scheme based on limited feedback to maximize the total rate while guaranteeing the quality of service (QoS) require- ment of real-time services. In this scheme, we design a user feedback control algorithm to effectively reduce feedback load. The algorithm determines to which base stations the users should report channel state information. We then formulate a joint subcarrier and power allocation issue and find that it has high complexity. Hence, we first distribute subcarriers under the assumption of equal power and develop a proportional allocation strategy to achieve a tradeoff between fairness and QoS. Next, an iterative water-filling power allocation is proposed to fully utilize the limited power. To further decrease complexity, a power iterative scheme is introduced. Simulation results show that the proposed scheme significantly improves system performance while reducing 68% of the feedback overhead. In addition, the power iterative strategy is suitable in practice due to low complexity.

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期刊信息
  • 《中国通信:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国通信学会
  • 主编:刘复利
  • 地址:北京市东城区广渠门内大街80号6层608
  • 邮编:100062
  • 邮箱:editor@ezcom.cn
  • 电话:010-64553845
  • 国际标准刊号:ISSN:1673-5447
  • 国内统一刊号:ISSN:11-5439/TN
  • 邮发代号:2-539
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:187