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同步ＣＤＭＡ（Ｓ－ＣＤＭＡ）解决了双向ＨＦＣ系统上行信道的噪声和容量问题，基于Ｓ－ＣＤＭＡ的ＨＦＣ是新一代的ＨＦＣ系统。初始接入ＣＤＭＡ终端是采用时隙ＡＬＯＨＡ技术完成接入进程的，把ＣＤＭＡ技术与时隙ＡＬＯＨＡ技术相结合，会使原来的时隙ＡＬＯＨＡ技术的吞吐量得到一定的改善。本文提出了一种ＨＦＣ网络ＣＤＭＡ．时隙ＡＬＯＨＡ接入系统，分析了该系统的吞吐量性能和接入时延性能，并给出了实验结果与分析。
Synchronous CDMA (S-CDMA) solves the problem of uplink channel noise and capacity in bidirectional HFC systems, and HFC based on S-CDMA is a new generation of HFC system. The initial access to the CDMA terminal is to use the time slot ALOHA technology to complete the access process. By combining the CDMA technology with the time slot ALOHA technology, the throughput of the original time slot ALOHA technology is improved to a certain extent. This paper presents a HFC network CDMA. Time slot ALOHA access system, the throughput performance and access delay performance of the system are analyzed, and the experimental results and analysis are given.