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一种改进的OFDM系统的自适应调制方法

An improved adaptive modulation algorithm for OFMD-based wireless communication systems
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摘要 本文提出了一种用于正交频分复用(OFDM)系统的改进自适应调制算法,该算法基于Fischer算法改进,在满足系统的传输速率及传输功率不变的前提下,为不同子载波分配不同的传输比特数和功率值,使误码率最低。经过仿真比较,该算法的性能与Fischer算法非常相近,但是其复杂度仅为Fischer算法的1/4,是一种非常适合实际应用的自适应调制算法。 This paper proposed an improved adaptive modulation algorithm for orthogonal frequency division multiplex（OFDM）. The proposed algorithm is improved based on Fischer algorithm, to allocate bit and power to different subcarrier in order to minimize bit error rate（BER） and keep static situation of the transmit rate and power. Simulation results show that the proposed algorithm has approximately the same performance as the Fischer algorithms with much less complexity. The improved algorithm is more economic than Fischer algorithm to apply.
作者 曹杰 李宝清
机构地区 中国科学院上海微系统与信息技术研究所无线传感网与通信重点实验室 中国科学院大学 中国科学院上海微系统与信息技术研究所微系统技术国防科技重点实验室
出处 《电子设计工程》 2016年第15期95-98,共4页 Electronic Design Engineering
基金 微系统技术国防科技重点实验室基金项目(9140C18010214XXXX)
关键词 OFDM 自适应调制 Fischer算法 复杂度 OFDM adaptive modulation Fischer algorithm complexity
分类号 TN914.3 [电子电信—通信与信息系统]
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参考文献14

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电子设计工程
2016年 第15期

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