CAJ | 학술논문

高效的差错控制编码技术(ECC)可以增强无线传感器网络传输稳定性、网络的能量利用效率。为了充分利用无线传感器网络中蕴含的分集资源应对恶劣信道环境导致的高差错概率，该文研究了基于根校验全分集 LDPC码的差错控制编码技术。首先，提出在分簇无线传感器网络中，基于根校验全分集 LDPC 码的编码方案；其次，设计了适用于所提方案的速率兼容全分集 LDPC 码字结构。最后，分析了所提编码系统的能效。仿真结果表明，在信道条件较差的环境中(仿真中，信道噪声大于44′10- mW )，采用该文的编码方案，能够显著提高无线传感器网络的能效。
고효적차착공제편마기술(ECC)가이증강무선전감기망락전수은정성、망락적능량이용효솔。위료충분이용무선전감기망락중온함적분집자원응대악렬신도배경도치적고차착개솔，해문연구료기우근교험전분집 LDPC마적차착공제편마기술。수선，제출재분족무선전감기망락중，기우근교험전분집 LDPC 마적편마방안；기차，설계료괄용우소제방안적속솔겸용전분집 LDPC 마자결구。최후，분석료소제편마계통적능효。방진결과표명，재신도조건교차적배경중(방진중，신도조성대우44′10- mW )，채용해문적편마방안，능구현저제고무선전감기망락적능효。
Efficient Error Control Coding (ECC) can be used to enhance the stability and energy efficiency of Wireless Sensor Networks (WSNs). In order to deal with high bit error probability due to poor channel environment in WSNs, the paper study the error control coding techniques based on full diversity root check Low Density Parity Check (LDPC) codes, which takes advantage of the diversity resources in a wireless sensor network. Firstly, the encoding scheme based on root check full diversity LDPC code is put forward in clustering WSNs, then the diversity gain is analyzed. Secondly, the structure of rate compatible full diversity LDPC codes for the proposed scheme is proposed. Finally, the energy efficiency of the coding WSNs system is given. Simulation results show that the proposed coding scheme can significantly improve the energy efficiency of wireless sensor networks in poor channel conditions environment (In the simulation, channel noise is greater than 44 ′ 10- mW ).