CAJ | 학술논문

针对实际甚低频和超低频接收机受非高斯噪声影响的问题，采用有限混合高斯噪声模型，建立了信号检测模型，并设计了一种基于马尔可夫链蒙特卡罗方法的信号盲检测算法。盲检测算法在贝叶斯层次模型下，采用Gibbs抽样更新参数，同步检测信道衰落系数、噪声模型参数和信号，该算法迭代速度快、精度高。通过与理论误码率性能比较，盲检测算法性能优异，对甚低频和超低频信号接收具有重要的现实意义。
침대실제심저빈화초저빈접수궤수비고사조성영향적문제，채용유한혼합고사조성모형，건립료신호검측모형，병설계료일충기우마이가부련몽특잡라방법적신호맹검측산법。맹검측산법재패협사층차모형하，채용Gibbs추양경신삼수，동보검측신도쇠락계수、조성모형삼수화신호，해산법질대속도쾌、정도고。통과여이론오마솔성능비교，맹검측산법성능우이，대심저빈화초저빈신호접수구유중요적현실의의。
Considering receiver in very low frequency (VLF) and super low frequency (SLF) communication system is af-fected by the non-Gaussian noise , a signal detection model with the finite mixture Gaussian noise model was proposed .A blind detection algorithm based on Markov Chain Monte Carlo ( MCMC) algorithm was designed .The blind detection algorithm can de-tect the channel fading coefficient , parameters of noise model , and signals at the same time through Gibbs sampler , which was based on Bayesian hierarchical model .The algorithm has a high iterative efficiency and precision .The results suggest that the er-ror rate of the proposed blind detection algorithm is as well as the theoretical error rate and can be excellently applied in practice .