下行多小区OFDMA系统中具有速率保证的动态子载波复用

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2006-12-11 DOI:10.1109/PIMRC.2006.253956

Carle Lengoumbi, P. Godlewski, P. Martins

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引用次数: 16

摘要

本文研究了多小区OFDMA系统的下行链路问题。研究了在最小速率要求和同信道干扰条件下的速率自适应优化问题。提出了一种低复杂度的子载波分配方案。一种特殊的方法通过动态调整子载波复用系数来限制同信道干扰。引入了速率需求冲突阈值来决定是否使用干扰限制程序。根据不同用户的速率要求对性能进行了评估。评估包括与现有启发式方法比较单元整体速率和中断概率

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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Dynamic Subcarrier Reuse With Rate Guaranty in a Downlink Multicell OFDMA System

In this paper, the downlink of a multi-cell OFDMA system is considered. Rate adaptive optimization is investigated with minimum rate requirement and in presence of co-channel interference. A low-complexity subcarrier allocation scheme is proposed. A particular procedure provides limitation of co-channel interference by dynamically adapting the subcarrier reuse factor. A rate requirement violation (RRV) threshold is introduced to decide whether or not the interference limitation procedure is to be used. The performance is evaluated for variant user's rate requirement. The evaluation includes comparison of the cell global rate and the outage probability with existing heuristics

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2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications

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