LDPC码的设计以及在无线传感器网络中的应用

摘要

Wireless sensor network nodes are usually deployed in harsh environment, which cause the channel coding scheme is indispensable for reliable data transmission.Low-density parity-check code is well known for its abilities to achieve near Shannon channel capacity limit.The design and implementation of LDPC code for WSNs are discussed, and the solutions are provided to reduce the decoding complexity and save the memory.The result shows that the LDPC code with short code length can be applied in WSN node to improve BER performance of the system.%LDPC码是众所周知的优秀信道编码,性能接近香农信道容量的极限.讨论了在无线传感器网络中LDPC码的设计和实际应用,并提供了解决方案,以降低解码复杂度,节省内存占用量,提高了系统的误码率性能.结果表明,短码长的LDPC码可以在无线传感器网络节点上应用并能获得较为理想的性能,具有很好的应用前景.