| 一种新的多模判决反馈盲均衡算法 |
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| 引用本文： | 康翠芹.一种新的多模判决反馈盲均衡算法[J].中国科技信息,2007,2(1):250-252. |
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| 作者姓名： | 康翠芹 |
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| 作者单位： | 山东省立医院,250021 |
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| 摘 要： | 在数字通信中,接收信号通常会受到码间干扰的影响,尤其是在多径衰弱无线信道环境中,这种现象更为严重。采用盲均衡技术可以消除码间干扰。针对基于常数模算法的判决反馈盲均衡收敛速度慢,稳态误差大的缺点,提出了一种新的多模判决反馈盲均衡算法。算法用信号的独立模值取代常数模算法的模值,加快了收敛速度减小了稳态误差。通过计算法仿真对两种算法进行比较,仿真结果证明了新算法的有效性。
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| 关 键 词： | 数字通信 码间干扰 盲均衡 常数模 判决反馈 |
A New DFE Based on Multi-modulus CMA Blind Equalization |
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| Kang Cuiqin.A New DFE Based on Multi-modulus CMA Blind Equalization[J].CHINA SCIENCE AND TECHNOLOGY INFORMATION,2007,2(1):250-252. |
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| Authors: | Kang Cuiqin |
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| Abstract: | In digital communications, the received signal is often corrupted by the inter-symbol interference (ISI), especially in the multi-path fading wireless channel circumstance. The ISI can be eliminated by blind equalization. In order to improve the convergence rate and stable state performance of the decision feedback equalization (DFE) based on constant modulus algorithm, a new DFE is proposed which replaces the modulus of CMA with independent modulus of the signals in constellation. The simulation results show that the performance of proposed algorithm is superior to the DFE. |
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| Keywords: | digitalc ommunication i nter-symboli nterference b lind equalization c onstantm odulusa lgorithm d ecisionf eedback equalization |
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