Resource allocation for HARQ-IR systems with QoS constraints and limited feedback

D. To, H. Nguyen, Quoc-Tuan Vien, Li-Ke Huang
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引用次数: 2

Abstract

This paper investigates power allocation for reliable downlink transmission in cellular networks subject to quality-of-service (QoS) constraints. The reliability of data transmissions is assured by hybrid automatic repeat request protocol with incremental redundancy (HARQ-IR). By evaluating the effective throughput of the HARQ-IR protocol for the downlink transmission under QoS constraints, we propose a novel power allocation policy to efficiently exploit the available resources. Furthermore, based on the derived effective throughput, optimization problem is formulated and solved, in which all channels are effectively allocated to all users. Finally, numerical results are provided to support theoretical findings.
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具有QoS约束和有限反馈的HARQ-IR系统资源分配
本文研究了受服务质量(QoS)约束的蜂窝网络下行可靠传输的功率分配问题。采用具有增量冗余的混合式自动重复请求协议(HARQ-IR)保证了数据传输的可靠性。通过评估在QoS约束下HARQ-IR协议下行传输的有效吞吐量,提出了一种新的功率分配策略,以有效地利用可用资源。在导出有效吞吐量的基础上,构造并求解了所有信道有效分配给所有用户的优化问题。最后,给出了数值结果来支持理论结果。
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