| Rate-embedded differential space-time-frequency coding scheme |
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| 作者姓名： | 张红伟 Zhang Haibin Song Wentao Liu Xingzhao |
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| 作者单位： | Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, P.R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家自然科学基金 |
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| 摘 要： | In multiple-input-multiple-output orthogonal-frequency-division-multiplexing （MIMO-OFDM） system, a rate-embedded differential space-time-frequency （DSTF） coding scheme was proposed. Both the conventional space-time codes and coding techniques in frequency domain were employed to build high rate and low rate space-time-frequency message matrices. Then both types of message matrices were differentially transmitted alternately in the frequency domain. Consequently, the total transmission rate could be improved greatly. At receiver, a simple decision feedback differential detector （SDF-DD） was adopted to further enhance the total error performance with approximate DD complexity. Simulation results verified that the proposed scheme can implement high rate and high reliability differential transmission. Compared with the conventional DSTF coding schemes, the proposed scheme achieves higher spectral efficiency and much better error performance.
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| 关 键 词： | 多输入多输入系统 正交频分复用技术 OFDM 微分时空频率 光谱效应 |
| 修稿时间： | 2006-07-14 |
Rate-embedded differential space-time-frequency coding scheme |
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| Zhang Hongwei,Zhang Haibin,Song Wentao,Liu Xingzhao.Rate-embedded differential space-time-frequency coding scheme[J].High Technology Letters,2007,13(3):312-316. |
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| Authors: | Zhang Hongwei Zhang Haibin Song Wentao Liu Xingzhao |
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| Institution: | Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, P.R. China |
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| Abstract: | In multiple-input-multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) system, a rate-embedded differential space-time-frequency (DSTF) coding scheme was proposed. Both the conventional space-time codes and coding techniques in frequency domain were employed to build high rate and low rate space-time-frequency message matrices. Then both types of message matrices were differentially transmitted alternately in the frequency domain. Consequently, the total transmission rate could be improved greatly. At receiver, a simple decision feedback differential detector (SDF-DD) was adopted to further enhance the total error performance with approximate DD complexity. Simulation results verified that the proposed scheme can implement high rate and high reliability differential transmission. Compared with the conventional DSTF coding schemes, the proposed scheme achieves higher spectral efficiency and much better error performance. |
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| Keywords: | multiple-input-multiple-output ( MIMO ) orthogonal-frequency-division-multiplexing(OFDM) differential space-time-frequency (DSTF) rate-embedded spectral efficiency |
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