计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2015年
11期
62-66
,共5页
邓昌建%陈东义%张衡%胡红阳%凌建中
鄧昌建%陳東義%張衡%鬍紅暘%凌建中
산창건%진동의%장형%호홍양%릉건중
子空间%噪声模型%信道估计%有效通信距离%信道选择
子空間%譟聲模型%信道估計%有效通信距離%信道選擇
자공간%조성모형%신도고계%유효통신거리%신도선택
subspace%noise model%channel estimation%active communication distance%channel selection
在工业无线传感网络中,信道性能要进行估计,工作信道要进行选择,以保证通信的可靠性。以分析工业环境噪声为基础,建立Krylov子空间频率选择接收信道模型,并分析信道中接收信号的时空性能。根据信道估计分析,提出使用时延判断信道的优劣的动态信道选择方法。实验数据表明,该方法能提高有效通讯距离2m左右,减少丢包率30%以上。
在工業無線傳感網絡中,信道性能要進行估計,工作信道要進行選擇,以保證通信的可靠性。以分析工業環境譟聲為基礎,建立Krylov子空間頻率選擇接收信道模型,併分析信道中接收信號的時空性能。根據信道估計分析,提齣使用時延判斷信道的優劣的動態信道選擇方法。實驗數據錶明,該方法能提高有效通訊距離2m左右,減少丟包率30%以上。
재공업무선전감망락중,신도성능요진행고계,공작신도요진행선택,이보증통신적가고성。이분석공업배경조성위기출,건립Krylov자공간빈솔선택접수신도모형,병분석신도중접수신호적시공성능。근거신도고계분석,제출사용시연판단신도적우렬적동태신도선택방법。실험수거표명,해방법능제고유효통신거리2m좌우,감소주포솔30%이상。
In industrial wireless sensor networks, the performance of channel should be estimated and the operating chan-nel should be selected to ensure reliability of communication. Based on analysis of industrial noise, the model of frequency selective receiving channel of Krylov subspace is established, and the time-space performance of receiving signal is ana-lyzed. According to the analysis of channel estimation, a method of dynamic channel selection which judges the quality of channel based on time delay is introduced. Experimental results show it can increase 2 meters of communication distance, and can reduce the packet loss rate 30%or so.