An effective semi-static interference coordination scheme for wireless cellular systems

2013 Wireless Telecommunications Symposium (WTS) Pub Date : 2013-04-17 DOI:10.1109/WTS.2013.6566251

Ruya Yan, Guomei Zhang, Bin Li, Pinyi Ren, Qinghe Du

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引用次数: 5

Abstract

In recent years, interference management designing has been studied widely for high data-rate wireless systems in next generation cellular systems such as 3GPP long term evolution (LTE), LTE-advanced, and worldwide interoperability for microwave access (WiMAX), where highly dense reuse of spectrum is required. Interference management includes receiver processing, interference randomization by frequency hopping, and interference coordination through resource usage restrictions imposed by frequency and power planning. In this paper, we present a novel semi-static interference coordination scheme for cellular systems to improve the cell-edge performance with little penalty to the overall system throughput. The proposed scheme consists of two stages, semi-static distributed resource pre-allocation and power control. Here, power control with a fixed adjusting factor and an adaptive power control algorithm are both considered. Simulation results show that the proposed scheme outperforms a number of reference conventional interference coordination schemes in terms of cell-edge and overall system throughput especially in high-load scenarios.

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一种有效的无线蜂窝系统半静态干扰协调方案

近年来，高数据速率无线系统的干扰管理设计在下一代蜂窝系统中得到了广泛的研究，如3GPP长期演进(LTE)、LTE-advanced和全球微波接入互操作性(WiMAX)，这些系统需要高度密集的频谱复用。干扰管理包括接收机处理、通过跳频进行干扰随机化以及通过频率和功率规划施加的资源使用限制进行干扰协调。在本文中，我们提出了一种新的蜂窝系统半静态干扰协调方案，以提高蜂窝边缘性能，而不影响系统的整体吞吐量。该方案分为半静态分布式资源预分配和功率控制两个阶段。本文考虑了固定调节因子的功率控制和自适应功率控制算法。仿真结果表明，在高负载情况下，该方案在蜂窝边缘和系统整体吞吐量方面优于许多参考的传统干扰协调方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 Wireless Telecommunications Symposium (WTS)

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