一种改进的增强寻呼突发及其仿真验证

An improved enhancing paging burst and its simulation verification

在同步轨道卫星通信系统中,为了进一步提高用户终端在受到遮挡或其他情况导致信道质量恶化时仍能最大程度地正确接收寻呼的能力,提出一种可用于增强寻呼的逻辑信道突发改进方案。设计了一种运用RS编码与扩频技术的增强寻呼突发结构,方案以码元为单位将编码后的寻呼消息拆分,经过扩频调制后发送,可以纠正随机错误,充分利用了编码和扩频增益。利用仿真可以看出,与现有方法相比,改进方案可以有效地提升寻呼消息的接收性能,降低寻呼消息在高斯信道下的误码率。同样,在更贴近真实的莱斯衰落信道下的性能也有明显改善。

To further improve the correct reception paging ability of user terminal to an extreme extent when the user termi-nal is covered or channel quality is deteriorated by other situations,an improved scheme of the logical channel burst for en-hanced paging is proposed for synchronous orbit satellite communication system. The enhanced paging burst structure is de-signed by RS coding and spread spectrum （SPSP） technology. The proposed scheme takes code element as the unit and splits the paging message which is transmitted after SPSP modulation,random errors are corrected,and it takes full advantage of coding and SPSP gains. The simulation results show that the improved scheme can effectively enhance the reception performance of the paging message and reduce the error rate in Gauss channel,compared with the conventional method. Similarly,the performance is also significantly improved in RICE fading channel which is most close to the actual situation.