| 单天线功率受限的自适应调制V-BLAST系统 |
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| 引用本文： | 宋扬,常永宇,杨大成.单天线功率受限的自适应调制V-BLAST系统[J].电路与系统学报,2008,13(3):136-139. |
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| 作者姓名： | 宋扬 常永宇 杨大成 |
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| 作者单位： | 1. 上海贝尔阿尔卡特股份有限公司,研究与创新中心,上海,201206
2. 北京邮电大学,电信工程学院,北京,100876 |
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| 摘 要： | 提出了一种在单天线峰值瞬时功率和总平均功率都受限条件下的改进注水法和离散调制的比特、功率分配方法,并应用于自适应调制V-BLAST系统.如果由注水法得到的分配结果中某发射天线的瞬时功率高于峰值功率限制,就修正该天线的分配比特数和功率使之满足限制要求,剩余的功率再由注水法分配到其他天线上.仿真结果表明,提出的算法很好地满足了目标要求,而且单天线功率受限使比特率有所下降.
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| 关 键 词： | 自适应调制 注水法 分配算法 功率受限 |
Adaptive modulation for V-BLAST systems with peak power constraint on each antenna |
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| SONG Yang,CHANG Yong-yu,YANG Da-cheng.Adaptive modulation for V-BLAST systems with peak power constraint on each antenna[J].Journal of Circuits and Systems,2008,13(3):136-139. |
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| Authors: | SONG Yang CHANG Yong-yu YANG Da-cheng |
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| Affiliation: | SONG Yang1,CHANG Yong-yu2,YANG Da-cheng2 ( 1. Research , Innovation Center,Alcatel Shanghai Bell Co. Ltd.,Shanghai 201206,China,2. School of Telecommunication Engineering,Beijing University of Posts , Telecommunications,Beijing 100876,China ) |
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| Abstract: | A modified water-filling algorithm and the loading algorithm for discrete constellation are proposed for adaptive modulated V-BLAST systems with peak power constraints on each antenna besides the total average power limit. If the instant power of an antenna by water-filling distribution is greater than the peak power constraint, the allocated bits and power are adjusted to satisfy the constraint, while the remaining power is distributed among other antennas again by water-filling. The simulation results ver... |
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| Keywords: | V-BLAST |
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