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
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.
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收藏
页码:2329 / 2332
页数:4
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