北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (4): 102-106.doi: 10.13190/jbupt.200804.102.014

• 研究报告 • 上一篇    下一篇

认知无线电网络子载波和功率分配

卢前溪1, 王文博1, 傅龙2,王玮1, 彭涛1   

  1. 1. 北京邮电大学 电信工程学院,北京 100876;2. 中国移动通信集团 黑龙江有限公司大庆分公司,大庆 163311
  • 收稿日期:2007-12-20 修回日期:1900-01-01 出版日期:2008-08-30 发布日期:2008-08-30
  • 通讯作者: 卢前溪

Subcarrier and Power Allocation Algorithm
in Cognitive Radio Networks

LU Qian-xi1, WANG Wen-bo1, FU Long2, WANG Wei1, PENG Tao1   

  1. 1 .School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Heilongjiang Company Daqing Branch, China Mobile Group, Daqing 163311, China)
  • Received:2007-12-20 Revised:1900-01-01 Online:2008-08-30 Published:2008-08-30
  • Contact: LU Qian-xi

摘要:

在干扰温度和总发送功率的限制条件下,提出了一种基于正交频分多址(OFDMA)接入方式的认知无线电网络上行链路子载波和功率分配算法,目标为最大化系统吞吐量。算法在初始分配方案的基础上不断调整,最终逼近最优分配方案。仿真结果表明,提出的算法在大幅度降低计算复杂度的同时,达到了接近穷举方案的性能。

关键词: 认知无线电, 资源分配, 注水算法, 子载波分配

Abstract:

Under the constraints of interference temperature and total transmit power, an algorithm is proposed for the uplink in orthogonal frequency division multiple access(OFDMA)based cognitive radio networks to maximize the system throughput. With the algorithm, the initial allocation will be adjusted to achieve the optimal allocation step by step. The simulations show that the proposed algorithm achieves the performance of exhausted scheme while decreasing the computational complexity largely.

Key words: cognitive radio, resource allocation, water-filling algorithm, subcarrier allocation

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