| 相干OFDM系统中导引符号功率优化 |
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| 引用本文： | 陈继明,唐友喜,李少谦. 相干OFDM系统中导引符号功率优化[J]. 通信学报, 2003, 24(12): 111-116 |
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| 作者姓名： | 陈继明 唐友喜 李少谦 |
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| 作者单位： | 电子科技大学,通信抗干扰技术国家重点实验室,四川,成都,610054 |
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| 基金项目： | 国家“863”课题基金(2001AA1230131)，国家自然科学基金(60272009〕 |
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| 摘 要： | 在瑞利衰落信道下，本文研究了导引符号功率对相干OFDM系统性能的影响，计算了由于不精确信道估计引起的系统性能损失，优化分析了导引符号与数据符号功率比，并给出完整的最优功率分配数学表达式。理论分析和仿真结果给出了各种参数对最优功率比的影响，同时理论结果为系统设计提供了依据。
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| 关 键 词： | 正交频分复用 导引符号辅助调制 导引数据功率比 多进制相移键控 误码率 OFDM |
| 文章编号： | 1000-436X(2003)12-0111-06 |
| 修稿时间： | 2002-12-19 |
Pilot power allocation for PSAM OFDM systems |
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| CHEN Ji-ming,TANG You-xi,LI Shao-qian. Pilot power allocation for PSAM OFDM systems[J]. Journal on Communications, 2003, 24(12): 111-116 |
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| Authors: | CHEN Ji-ming TANG You-xi LI Shao-qian |
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| Abstract: | In this paper, we investigate the system performance influence due to variation of the power of the pilots in pilot symbol assisted modulation orthogonal frequency division multiplexing systems in Rayleigh fading propagation environments, the performance loss due to imperfect channel estimation is calculated, and the pilot-to-data power ratio is optimized analytically, finally closed form formula is used to determine the optimum pilot power allocation. Theoretical and simulation results show the effect of the various parameters and provide a suitable tool for system design. |
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| Keywords: | orthogonal frequency division multiplexing pilot symbol assisted modulation pilot-to-data power ratio M-PSK BER |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
