| MB-OFDM UWB通信空时网格编码误码率分析 |
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| 引用本文： | 蒙文武,朱光喜,李植荣,喻莉.MB-OFDM UWB通信空时网格编码误码率分析[J].电子学报,2010,38(10):2453-2455. |
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| 作者姓名： | 蒙文武 朱光喜 李植荣 喻莉 |
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| 作者单位： | 华中科技大学电子与信息工程系;武汉船舶通信研究所;滑铁卢大学计算机系; |
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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，中国博士后科学基金，湖北省杰出青年基金 |
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| 摘 要： | 本文研究多带正交频分复用瑞利衰落信道中,空时网格编码发射天线间空间相关性的分集性能.空时网格编码将单个输出的编码符号转换成多个编码符号,并通过多个发射天线传输,在接收端,Viterbi优化软判决算法用于译码.我们分析了MB-OFDM系统在quasi-static和interleaved两种信道中相关空间衰落对误码率的影响.在空间相关性较小时,分集阶数能得到保持;而在空间相关性较大时,interleaved信道能保持分集阶数,quasi-static信道的分集阶数将减小.空时编码总体上对空间相关性表现出鲁棒性.
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| 关 键 词： | 超宽带 多带正交频分复用 空时网格编码 成对误码率 分集阶数 |
| 收稿时间： | 2009-04-27 |
The Error Analysis of STTC for MB-OFDM UWB Communications |
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| MENG Wen-wu,ZHU Guang-xi,LI Zhi-rong,YU Li.The Error Analysis of STTC for MB-OFDM UWB Communications[J].Acta Electronica Sinica,2010,38(10):2453-2455. |
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| Authors: | MENG Wen-wu ZHU Guang-xi LI Zhi-rong YU Li |
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| Affiliation: | MENG Wen-wu1,2,ZHU Guang-xi1,LI Zhi-rong3,YU Li1(1.Department of Electronics and Information Engineering,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China,2.Wuhan Maritime Communication Research Institute,Hubei 430079,3.Department of Computer Science,University of Waterloo,Waterloo,ON N2L 3G1,Canada) |
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| Abstract: | Space-time trellis codes(STTC) in multiband orthogonal frequency division multiplexing(MB-OFDM) systems with Rayleigh fading channels is proposed and diversity performance with spatial correlation between the transmit antennas is analyzed.STTC converts the single output code symbol into several code symbols,which are to be transmitted simultaneously from multiple transmitter antennas.Viterbi optimal soft decision decoding algorithm is used at the receiver.We investigate both quasi-static and interleaved cha... |
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| Keywords: | ultra wideband(UWB) multiband orthogonal frequency division multiplexing(MB-OFDM) space-time trellis codes(STTC) pairwise error probability(PEP) diversity order |
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