机构地区: 解放军理工大学通信工程学院
出 处: 《通信技术》 2012年第9期50-53,共4页
摘 要: 在分析直升机卫星通信环境下旋翼遮挡问题的基础上,结合具有良好性能的低密度奇偶校验(LDPC)码LLR BP译码算法,提出了一种新的适合于直升机卫星通信环境下不同遮挡类型的译码算法。仿真结果表明,在直升机卫星通信环境下,新的LLR BP译码算法比未经改进的LLR BP译码算法有更好的译码性能。 For the shield problem in the helicopter satellite communication environment and in combination of LDPC and LLR BP with good performance,a new decoding algorithms suitable for different types of shield in the helicopter satellite communication environment is proposed.The simulation results indicate that in the helicopter satellite communication environment,the new LLR BP decoding algorithm has much better performance compared with the normal LLR BP algorithm.