| A New High Rate Differential Space-Time-Frequency Modulation for MIMO-OFDM |
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| 作者姓名： | Jun Wang Shou-Yin Liu |
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| 作者单位： | The authors are with Department of Electronic and InformationEngineering, Huazhong Normal University, Wuhan, 430079, China |
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| 基金项目： | 国家自然科学基金;湖北省自然科学基金 |
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| 摘 要： | In this paper, we propose a new differential space-time-frequency （DSTF） modulation for MIMOOFDM system with four transmit-antennas and arbitrary receive-antennas, which can improve the transmission rate since it can adopt high order quadrature amplitude modulation （QAM） modulation. Our proposed DSTF scheme embeds some full diversity full rate （FDFR） quasi-orthogonal space-time codes （QOSTBC） with QAM modulation into the frequency intervals and adopts the differential modulation in both time and frequency domains. The simulation results demonstrate that the proposed DSTF scheme can improve transmission rate greatly. Compared with the conventional differential unitary space-time modulation （DUSTM）, it can get better transmission performance in high transmission rate for MIMO-OFDM system.
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| 关 键 词： | 空间时间频率 微分调制 MIMO-OFDM系统 多输入多输出系统 无线通讯 |
| 修稿时间： | 2006-11-16 |
A New High Rate Differential Space-Time-Frequency Modulation for MIMO-OFDM |
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| Jun Wang Shou-Yin Liu.A New High Rate Differential Space-Time-Frequency Modulation for MIMO-OFDM[J].Journal of Electronic Science Technology of China,2007,5(3):193-197. |
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| Authors: | Jun Wang Shou-Yin Liu |
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| Abstract: | In this paper, we propose a new differential space-time-frequency (DSTF) modulation for MIMO- OFDM system with four transmit-antennas and arbitrary receive-antennas, which can improve the transmission rate since it can adopt high order quadrature amplitude modulation (QAM) modulation. Our proposed DSTF scheme embeds some full diversity full rate (FDFR) quasi-orthogonal space-time codes (QOSTBC) with QAM modulation into the frequency intervals and adopts the differential modulation in both time and frequency domains. The simulation results demonstrate that the proposed DSTF scheme can improve transmission rate greatly. Compared with the conventional differential unitary space-time modulation (DUSTM), it can get better transmission performance in high transmission rate for MIMO-OFDM system. |
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| Keywords: | Differential modulation high transmission rate MIMO- OFDM space-time-frequency |
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