Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e

GAO Huan-qin; FENG Guang-zeng; ZHU Qi

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Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e

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- Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e
- Acta Electronica Sinica Vol. 37, Issue 7, Pages: 1465-1469(2009)
- 作者机构：
  
  1. 南京邮电大学通信与信息工程学院,江苏,南京,210003
  2. 南京邮电大学江苏省无线通信重点实验室,江苏,南京,210003
  3. 东南大学移动通信国家重点实验室,江苏,南京,210096
  4. 南京邮电大学通信与信息工程学院江苏南京,210003
  5. 南京邮电大学江苏省无线通信重点实验室江苏南京,210003
  6. 东南大学移动通信国家重点实验室江苏南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN929.5
- Published：2009
- 稿件说明：
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GAO Huan-qin, FENG Guang-zeng, ZHU Qi. Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e[J]. Acta Electronica Sinica, 2009, 37(7): 1465-1469.
DOI：

GAO Huan-qin, FENG Guang-zeng, ZHU Qi. Research of Optimum SNR Thresholds of AQAM System and Its Application in IEEE802.16e[J]. Acta Electronica Sinica, 2009, 37(7): 1465-1469. DOI：

摘要

自适应调制根据瞬时信道信噪比选择适当的调制方式

能够改善系统的BER性能以及平均吞吐量性能.在常用于高速移动环境的六径瑞利衰落信道模型下

研究自适应调制系统的最佳信噪比门限值

使系统的平均吞吐量最大

同时能够保证系统达到目标BER性能.得到的最佳信噪比门限值可以用于ITU-R M.1225 Vehicular Test A 模型的自适应调制系统.给出了最佳信噪比门限值用于IEEE802.16e OFDM自适应调制系统的性能仿真

并对仿真结果进行了分析.

Abstract

Adaptive modulation techniques can improve the BER (bit error rate) performance or the average throughput by employing a suitable modulation mode depending on the instantaneous channel SNR (signal-to-noise ratio).In this paper the optimum SNR thresholds over a 6-path Rayleigh channel are derived

which shows a superior BPS (bit per symbol) throughput performance while maintaining the target average BER.The 6-path Rayleigh channel is often applied to mobile environment with high-speed.The results achieved in this paper can be applied to the adaptive modulation system with the channel of ITU-R M.1225 Vehicular Test A mode.Performance simulation of the derived thresholds in the IEEE802.16e OFDM system is presented and then the simulation results are analyzed.

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