摘要
为了满足未来固定宽带无线接入系统高数据速率传输及高频谱利用率的要求,就需要在物理层和媒体访问控制层进行技术上的革新,所涉及的关键技术包括:高频谱利用率的天线系统、具有时延扩展鲁棒性的调制方式、均衡与编码技术、高效的多址接入技术、自适应链路技术等。文章对这些技术进行了分析,并对系统安全问题进行了探讨。
In order to satisfy the future requirements of fixed broadband wireless access systems for high data-rate and high frequency efficiency, technical renovation on the physical layer and control layer is demanded. The paper analyzes relevant technologies such as the high spectrum utilization antenna, robust time-delay extension modulation, equalization and encoding, highly efficient multi-address access and adaptive linking. The system security issues are also discussed.
出处
《中兴通讯技术》
2004年第3期1-4,共4页
ZTE Technology Journal
基金
国家"863"计划项目(2003AA12331003)
