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	高速窄带OFDM电力线通信实时动态频谱分配
	张童飞 ; 郭静波 ; ZHANG Tongfei ; GUO Jingbo
	2016-03-30 ; 2016-03-30
关键词	高速窄带电力线通信 正交频分复用 速率自适应 动态频谱分配 high data rate narrowband power line communication(HDR NB PLC) orthogonal frequency division multiplexing(OFDM) rate adaptive dynamic spectrum management TM73
其他题名	Real-time Dynamic Spectrum Management in OFDM-based High-data Rate Narrowband Power Line Communications
中文摘要	动态频谱分配应用于实际电力线通信系统面临分配策略、实时算法等诸多挑战,到目前为止还未见有公开报道。定义并设计了一个实际的基于正交频分复用(orthogonal frequency division multiplexing,OFDM)的高速窄带电力线通信系统构架,并提出一种适用于该系统的动态频谱分配策略和对应的实时实现算法。该算法在任一种调制方式下将子载波进行分组,并对各个子载波组的功率进行排序,选择可用的子载波组,根据速率最大化准则确定最优的调制方式并分配功率。该算法与Hughes-Hartogs算法相比,具有较低的运算复杂度和较少的信令开销,与传统的等功率分配方式相比,误码性能更好。仿真结果和实验结果证明了该算法的有效性和优越性。; A lot of challenges have to be solved in implementation of dynamic spectrum management(DSM) such as allocation strategy and the related real time algorithm, and yet there is no such work reported publicly. Architecture of an actual orthogonal frequency division multiplexing(OFDM)-based high data rate narrowband power line communication(HDR NB PLC) system was defined and designed, and a novel strategy of DSM and the related real time algorithm suitable for the system was proposed. Under a given dimension of modulation, the algorithm partitioned the subcarriers, sorted them in power order,chose the available group, and finally determined the best modulation scheme and optimally allocated the power according to the rate maximization criteria. Comparing to the typical Hughes-Hartogs algorithm, the proposed algorithm has lower computational complexity and less signaling overhead. Comparing with conventional constant power allocation, the algorithm has a better performance of bit error rate. Simulation and experimental results verified the effectiveness and advantages of the algorithm.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/142684]
专题	清华大学
推荐引用方式 GB/T 7714	张童飞,郭静波,ZHANG Tongfei,等. 高速窄带OFDM电力线通信实时动态频谱分配[J],2016, 2016.
APA	张童飞,郭静波,ZHANG Tongfei,&GUO Jingbo.(2016).高速窄带OFDM电力线通信实时动态频谱分配..
MLA	张童飞,et al."高速窄带OFDM电力线通信实时动态频谱分配".(2016).

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