VSAT卫星通信准时隙ALOHA-CDMA信道及其性能分析

Acknowledgment-type-ALOHA-CDMA Channels for VSAT Satellite Communication and Its Performance Analysis

提出了一种可用于具有大量用户的VSAT卫星通信内向信道的准时隙ALOHA-CDMA接入协议,并给出这种接入协议的信道模型.然后,分析计算了这种信道数据分组成功接收的概率和扩频码间干扰,并对其信道吞吐性能进行分析和仿真.仿真结果表明,这种系统可以显著提高信道吞吐性能和信道利用率.本文提出的准时隙ALOHA-CDMA信道,对于简化组网成本具有现实的意义.

A new kind of multiple access channel which is called acknowledgment-type random access and code division multiple access channel （ACK-ALOHA-CDMA） is proposed, which is suitable for inner channel of VSAT satellite communication. First the channel model is given, and then the throughput performance of the channel is studied. Simulation results show that a significant performance improvement can be gained by the ACK-ALOHA-CDMA channel.