电子器件
電子器件
전자기건
JOURNAL OF ELECTRON DEVICES
2014年
2期
345-349
,共5页
钟景川%祁杰%李保申%陈奋晓%屠晨峰%张萌
鐘景川%祁傑%李保申%陳奮曉%屠晨峰%張萌
종경천%기걸%리보신%진강효%도신봉%장맹
无线传感器网络%联合信道网络编码%Turbo码%LDPC码
無線傳感器網絡%聯閤信道網絡編碼%Turbo碼%LDPC碼
무선전감기망락%연합신도망락편마%Turbo마%LDPC마
wireless sensor network%joint coding of channel coding and network coding%Turbo codes%LDPC codes
网络编码技术可以提高网络吞吐量和传输性能,均衡网络负载。在无线传感器网络中,应用网络编码和信道编码联合编码技术可以降低节点数据处理复杂度,大幅提升系统整体性能。基于传统网络编码模型,在节点中加入数据调制功能,可以实现网络编码和信道编码的联合编码,信道编码则采用各方面性能较好的Turbo码和LDPC码。结果表明,在10-4误码率下,联合编码方案的信噪比相比于传统编码方案有1.5 dB的节省。
網絡編碼技術可以提高網絡吞吐量和傳輸性能,均衡網絡負載。在無線傳感器網絡中,應用網絡編碼和信道編碼聯閤編碼技術可以降低節點數據處理複雜度,大幅提升繫統整體性能。基于傳統網絡編碼模型,在節點中加入數據調製功能,可以實現網絡編碼和信道編碼的聯閤編碼,信道編碼則採用各方麵性能較好的Turbo碼和LDPC碼。結果錶明,在10-4誤碼率下,聯閤編碼方案的信譟比相比于傳統編碼方案有1.5 dB的節省。
망락편마기술가이제고망락탄토량화전수성능,균형망락부재。재무선전감기망락중,응용망락편마화신도편마연합편마기술가이강저절점수거처리복잡도,대폭제승계통정체성능。기우전통망락편마모형,재절점중가입수거조제공능,가이실현망락편마화신도편마적연합편마,신도편마칙채용각방면성능교호적Turbo마화LDPC마。결과표명,재10-4오마솔하,연합편마방안적신조비상비우전통편마방안유1.5 dB적절성。
Network coding technology can not only improve the throughput and transmission efficiency of the network system,but also make the load more balanced. By employing the joint coding of network coding and channel coding in the Wireless Sensor Network,it can reduce the complexity of data processing in the node and hugely promote the performance of the whole system. Based on the traditional netwok coding model, joint coding can be realized by employing the modulation in the node. Turbo codes and LDPC codes are among those best performing codes and they have some unique advantages so are preferred in the system. The result shows that under the same circumstance of bit error rate 10-4 ,the signal to noise ratio can be saved by 1. 5 dB.