| Turbo码和空时块码接连调制系统的研究 |
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| 引用本文： | 阿哈麦德,潘志文,高西奇,尤肖虎. Turbo码和空时块码接连调制系统的研究[J]. 应用科学学报, 2004, 22(1): 10-15 |
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| 作者姓名： | 阿哈麦德 潘志文 高西奇 尤肖虎 |
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| 作者单位： | 东南大学,移动通信国家重点实验室,江苏,南京,210096 |
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| 基金项目： | Project supported by the National 863 progra |
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| 摘 要： | 采用空时分组编码与Turbo码级联技术，提高了经过衰落信道的无线通信系统可靠性．利用双天线发送分集和单天线接收系统，其中将1/2Turbo码作为外码、简单的空时分组码作为内码,叠代解码方案基于MAP算法．解码的复杂程度取决于外码格栅复杂程度．仿真结果表明，利用空时分组编码的发送分集，可在几乎不增加额外处理量的情况下显著提高系统的接收性能．
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| 关 键 词： | Turbo码 接连调制系统 空时编码 格栅码解调 无线通信 MAP算法 |
Serial Concatenation of Space-Time Block Codes with Turbo Coded Modulation Systems |
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| Abstract. Serial Concatenation of Space-Time Block Codes with Turbo Coded Modulation Systems[J]. Journal of Applied Sciences, 2004, 22(1): 10-15 |
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| Authors: | Abstract |
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| Abstract: | In this paper, the concatenation of Turbo codes with space time block codes (STBCs) to improve the reliability of wireless communication over fading channels is considered. We combined rate 1/2 Turbo code as outer code and a simple two-antenna space-time block code as inner code for transmitting diversity and one receiver antenna. The iterative decoding scheme is based on MAP algorithm. The decoding complexity is mainly determined by the trellis complexity of the outer code. Simulation results show that exploiting transmit-diversity by using space-time block codes provides remarkable performance at the expense of almost no extra processing. |
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| Keywords: | space-time codes Turbo coded modulation trellis coded modulation |
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