| 第三代移动通信中的自适应调制和编码方法 |
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| 引用本文： | 汤敏,蔡润,周蓓磊,王宗欣.第三代移动通信中的自适应调制和编码方法[J].复旦学报(自然科学版),2004,43(1):82-86. |
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| 作者姓名： | 汤敏 蔡润 周蓓磊 王宗欣 |
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| 作者单位： | 复旦大学,通信科学与工程系,上海,200433 |
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| 摘 要： | 在无线信道的多媒体传输中，采用自适应调制技术可以提高传输效率和网络吞吐量，而结合编码码率的自适应调整，能够更大程度地降低系统的中断概率；介绍了改进的自适应功率分配的算法，并在此基础上给出了自适应确定调制级数M和码率R的界限，以用于3G系统的自适应调制和编码，仿真结果表明，应用该自适应调制和编码技术，可降低系统的中断概率达2到3个数量级。
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| 关 键 词： | 通信技术 卷积码 自适应 载噪比 误码率界限 |
| 文章编号： | 0427-7104(2004)01-0082-05 |
An Adaptive Modulation and Coding Scheme for Third-generation Mobile Communications |
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| TANG Min,CAI Run,ZHOU Bei-lei,WANG Zong-xin.An Adaptive Modulation and Coding Scheme for Third-generation Mobile Communications[J].Journal of Fudan University(Natural Science),2004,43(1):82-86. |
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| Authors: | TANG Min CAI Run ZHOU Bei-lei WANG Zong-xin |
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| Abstract: | For Third-Generation (3G) mobile communications, the application of a daptive modulation and coding is one of the key techniques to achieve high spectral efficiency on fading channels while a great reduction in outrage probability is maintained. It is presented an improved algorithm of adaptive power allocation and adaptive method of selecting constellation size M and rate R , i.e., selecting an appropriate modulation and coding scheme according to the estimated channel condition. Simulation and numerical results are presented, showing that outrage probability of the adaptive system can be decreased 2-3 orders of magnitude. |
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| Keywords: | communication technology convolutional coding adaptive carrier-to-noise ratio(CNR) BER threshold |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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