Signaling and multiple access techniques for ultra wideband 4G wireless communication systems

被引：0
|
作者：
Chung, WC [1 ]
August, NJ [1 ]
Ha, DS [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
来源：
IEEE WIRELESS COMMUNICATIONS | 2005年 / 12卷 / 02期
关键词：
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Due to the demanding performance requirements for fourth-generation wireless systems, several technologies have been considered for replacing third-generation wireless systems. Potential technologies for fourth-generation wireless systems are ultra wideband, orthogonal frequency-division multiplexing, and multi-input multi-output antenna systems. Ultra wideband is of particular interest for fourth-generation wireless applications that emphasize short range, high data rate, and/or low power. We focus on ultra wideband radio due to its unique advantages: high data rate, low power, and resilience to multipath fading effects. We discuss the signal characteristics, channel propagation, modulation schemes, and hardware implementation. Two major approaches to ultra wideband signaling, impulse-based and multicarrier ultra wideband, are elaborated. Furthermore, two categories of multiple access are also considered: distributed and centralized.
引用
收藏
页码：46 / 55
页数：10
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