| CDMA随机接入系统与S—ALOHA系统的性能对比分析 |
| |
| 引用本文： | 徐大勇,项海格.CDMA随机接入系统与S—ALOHA系统的性能对比分析[J].电子学报,1999,27(1):133-135. |
| |
| 作者姓名： | 徐大勇 项海格 |
| |
| 作者单位： | 北京大学电子学系 |
| |
| 摘 要： | 传统的Ｓ－ＡＬＤＨＡ随机接入协议用于通信网络，其理论上的极限通过量为３６％，但在这种情况下，系统的时延随着负荷的增加也变得越来越大，因此传统Ｓ－ＡＬＯＨＡ方式不适合于时延要求较高的通信系统，本文通过研究系统在较低负荷的情况发现采用ＣＤＭＡ技术的随机接入方法在占用相同的系统带宽的条件下，可以获得与传统Ｓ＿ＡＬＯＨＡ方式相同的通过量，而时延却大大降低，而且随着ＣＤＭＡ领域抗干扰技术的发展，它的系统性能
|
| 关 键 词： | ALOHA CDMA 通过量 时延 多址通信 |
A Compared Performance Analysis Between CDMA Random Access System and S ALOHA System |
| |
| Xu Dayong,Xiang Haige.A Compared Performance Analysis Between CDMA Random Access System and S ALOHA System[J].Acta Electronica Sinica,1999,27(1):133-135. |
| |
| Authors: | Xu Dayong Xiang Haige |
| |
| Abstract: | The theoretical throughput of the S ALOHA system is 36%,but meanwhile there's a large average delay in the system due to frequent retransmission.So it does not fit for the condition that needs real time services.The paper finds that a random access system based on CDMA techniques can achieve the same throughput as ALOHA system,while has a reduced average delay.And with some anti inference methods of CDMA technique,the system performance can be improved.Some numerical results are given. |
| |
| Keywords: | ALOHA CDMA Throughput Delay |
| 本文献已被 CNKI 维普 等数据库收录！ |
