| OFDM系统中空时分组编码技术 |
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| 引用本文： | 罗涛,滕勇,佟学俭,乐光新. OFDM系统中空时分组编码技术[J]. 北京邮电大学学报, 2004, 27(1): 45-49 |
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| 作者姓名： | 罗涛 滕勇 佟学俭 乐光新 |
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| 作者单位： | 北京邮电大学 电信工程学院, 北京 100876 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 采用预编码技术,提出了一种在频率选择性衰落信道中使用空时分组码的实现方案:预编码STBC-OFDM系统,并进一步分析了其最小距离球界的符号差错性能。研究结果表明,在频率选择性衰落信道中,这种预编码系统极大限度地利用了系统中所有可用的分集资源,而复杂度变化不大,可获得的最大分集好处为:发送天线数与接收天线数以及可分离的多条路径数目的乘积。
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| 关 键 词： | 信道编码 空时分组码 分集技术 正交频分复用 |
| 文章编号： | 1007-5321(2004)01-0045-05 |
| 收稿时间： | 2002-09-12 |
| 修稿时间： | 2002-09-12 |
Space-Time Block Codes Design in OFDM System |
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| LUO Tao,TENG Yong,TONG Xue-jian,YUE Guang-xin. Space-Time Block Codes Design in OFDM System[J]. Journal of Beijing University of Posts and Telecommunications, 2004, 27(1): 45-49 |
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| Authors: | LUO Tao TENG Yong TONG Xue-jian YUE Guang-xin |
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| Affiliation: | Telecommunication Engineering School, Beijing University of Posts andTelecommunications, Beijing 100876, China |
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| Abstract: | Using redundant pre-coding, a novel method, pre-coding STBC-OFDM system, combining the space-time block codes and OFDM smoothly in frequency selective fading channel is proposed. In addition, the minimum distance sphere up-bound of this system is also obtained. Results show that the attractiveness of this pre-coding STBC-OFDM system in frequency selective channel is in its ability to exploit all the available diversity resources. In other words, the highest possible diversity order this pre-coding STBC-OFDM system can provide is the product of the number of transmitter antennas, the number of receiver antennas and the number of selective fading diversity order. |
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| Keywords: | channel encode space-time block codes diversity technology OFDM |
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