| 基于误码率的DF协作通信系统功率分配方法 |
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| 引用本文： | 商敏红,武贵路,徐平平. 基于误码率的DF协作通信系统功率分配方法[J]. 现代电子技术, 2014, 0(21): 9-11 |
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| 作者姓名： | 商敏红 武贵路 徐平平 |
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| 作者单位： | 1. 江苏信息职业技术学院 电子信息工程系，江苏 无锡 214153; 东南大学 移动通信国家重点实验室，江苏 南京 210096
2. 东南大学 移动通信国家重点实验室,江苏 南京,210096 |
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| 基金项目： | 东南大学移动通信国家重点实验室科研基金(2014A03)；江苏省高等职业院校国内高级访问学者计划资助项目 |
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| 摘 要： | 针对协作通信系统能量有限和误码率高等问题,在DF协作通信系统中,研究一种基于误码率的概率分配算法。在总发射功率一定的条件下,建立以满足最小误码率为目标的优化问题。利用Lagrange乘子,求解该优化问题的闭式解,得出最佳功率分配方案。仿真结果表明,在总功率一定的情况下,该功率分配算法较其他功率分配方案具有较低的误码率。
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| 关 键 词： | 协作通信 DF 功率分配 误码率 |
Power allocation method based on error rate in decode and forward cooperative communication system |
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| SHANG Minhong , WU Guilu , XU Pingping. Power allocation method based on error rate in decode and forward cooperative communication system[J]. Modern Electronic Technique, 2014, 0(21): 9-11 |
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| Authors: | SHANG Minhong WU Guilu XU Pingping |
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| Affiliation: | SHANG Min-hong,WU Gui-lu,XU Ping-ping(1. Department of Electronics and Information Engineering, Jiangsn College of Information Technology, Wuxi 214153, China; 2. National Key Lab for Mobile Communications, Southeast University, Nanjing 210096, China) |
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| Abstract: | Since the cooperative communication system′s energy is limited and its bit error rate is high,a probability allocation algorithm based on bit error rate is researched for the DF cooperative communication system. Under the condition that total transmission power is definite,an optimization approach is set up to minimize the bit error rate. The closed-form solution for the optimization approach is solved by means of Lagrange multiplier to achieve the optimal power allocation scheme. The simulation results show that,in the case of the definite total power,the bit error rate of the power allocation algorithm is lower than that of other power allocation schemes. |
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| Keywords: | cooperative communication decode and forward power distribution bit error rate |
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