Multi-carrier spread spectrum and its relationship to single-carrier transmission

被引：0
|
作者：
Bruninghaus, K [1 ]
Rohling, H [1 ]
机构：
[1] Tech Univ Braunschweig, Inst Telecommun, D-3300 Braunschweig, Germany
来源：
48TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-3 | 1998年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The combination of orthogonal frequency division multiplexing (OFDM) and code division multiplexing (CDM) has found great interest during the last few years. In contrast to a conventional OFDM system the information is spread over several subcarriers using orthogonal codes which leads to a diversity gain in frequency-selective channels. In this paper it is shown that such a system is technically equivalent to a single-carrier system with guard interval if the columns of a Fourier matrix are used as spreading codes. The pros and cons of such a system compared to an OFDM-CDM system with abritrary spreading matrix are described and discussed.
引用
收藏
页码：2329 / 2332
页数：4
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