| 一种适用于无线网络中多媒体传输的CDMA/RTDMA协议及性能分析 |
| |
| 引用本文： | 陆晓文,吕冰,周武旸,朱近康. 一种适用于无线网络中多媒体传输的CDMA/RTDMA协议及性能分析[J]. 电子与信息学报, 2002, 24(12): 1800-1807 |
| |
| 作者姓名： | 陆晓文 吕冰 周武旸 朱近康 |
| |
| 作者单位： | 中国科技大学个人通信与扩频通信实验室,合肥,230027 |
| |
| 摘 要： | 该文研究了一种在扩频分组无线网中适合2多媒体传输的MAC协议－－CDMA／RTDMA。它在RTDMA的基础上，将基站可分配的资源从时隙扩展为码字－时隙，从而增加了系统的容量，更有效地支持多媒体业务的传输。文章分别通过M／M/n/m排队模型和相位过程来分析话音的丢包率和数据的延迟。通过数值计算和计算机仿真，相对于原有的RTDMA方式，这种新的MAC协议在网络负载较重的情况下，仍能保证多种业务的QoS要求。
|
| 关 键 词： | 无线网络 多媒体传输 CDMA／RTDMA协议 M／M／n／m排队模型 相位过程 QoS 服务质量 |
| 收稿时间： | 2001-06-20 |
| 修稿时间： | 2001-06-20 |
Performance of a joint cdma/rtdma protocol for multimedia transmission in wireless network |
| |
| Lu Xiaowen,Lu Bing,Zhou Wuyang,Zhu Jinkang. Performance of a joint cdma/rtdma protocol for multimedia transmission in wireless network[J]. Journal of Electronics & Information Technology, 2002, 24(12): 1800-1807 |
| |
| Authors: | Lu Xiaowen Lu Bing Zhou Wuyang Zhu Jinkang |
| |
| Affiliation: | PCN and SS Lab.,Univ. of Sci. and Tech. of China Hefei 230026 China |
| |
| Abstract: | In this paper a novel joint CDMA/RTDMA MAC for multimedia transmission in wireless network is studied. In this scheme, the resource unit allocated by the base station is changed from a slot to a code-slot. Thus it enhances the system's capacity and can support multi-media service more efficiently. The voice packet dropping probability and data delay are analyzed through M/M /n/m model and phase process respectively. Compared to the original RTDMA, this new MAC protocol can provide multiple services' QoS even under the heavy load. |
| |
| Keywords: | CDMA/RTDMA Multimedia transmission M/M/n/m model Phase process QoS |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
|
点击此处可从《电子与信息学报》下载全文 |
