共查询到18条相似文献,搜索用时 78 毫秒
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本文对大容量数字微波通信系统中常用的自适应均衡技术进行了比较,介绍了可变谐振型频域均衡与中频横向时域均衡的工作原理,最后给出了它们对系统的改善情况。 相似文献
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自适应信道均衡在短波通信中的应用研究 总被引:2,自引:0,他引:2
文中对LS格型算法和平方根卡尔算法在短波通信的信道均衡中应用的情况进行了讨论,给出了平方根卡尔曼均衡器应用于8PSK信号解调的设计思路. 相似文献
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短波通信中的自适应信道均衡技术 总被引:4,自引:0,他引:4
对短波通信中的自适应信道均衡技术进行了讨论,比较说明了LS格型算法和平方根卡尔曼算法,同时给出了平方根卡尔曼均衡器的实际应用情况。 相似文献
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自适应均衡技术的研究 总被引:1,自引:0,他引:1
为减小声音在经过房间到达人耳时存在的失真,需要进行必要的校正.对传统的最小均方(Leaat Mean Square,简称LMS)算法进行改进,并用于数字房间校正,能迅速检测影响传榆频率特性的各种因素,计算出传榆频率特性曲线,自动设定一个与之对称的反向均衡曲线,使系统能得到一个相时平直的传输频率特性曲线.仿真验证了改进的LMS算法在收敛速度和稳态误差两方面的明显改善. 相似文献
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数字移动通信中的自适应均衡技术 总被引:6,自引:0,他引:6
分析了移动通信的信道模型,论述了用于时变信道快速收敛的自适应均衡器结构、算法和它们的比较,给出了研究自应用均衡的计算机模拟方法,并对均衡器中主要设计参数进行了讨论。 相似文献
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自适应均衡器的FPGA设计 总被引:1,自引:0,他引:1
论文介绍了自适应盲均衡器的FPGA设计,主要对自适应均衡器的核心运算单元-采用booth编码算法设计的高性能乘累加(MAC)运算单元进行了详细描述。 相似文献
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Adaptive array has been used for canceling the interference in communication. When the array cannot suppress all the interference,
an equalizer following the array can add to further enhance the capability of canceling the inter-symbol interference (ISI).
The adaptive array and equalizer (AE) will suffer the problems of insufficient degrees of freedom and main-beam multi-path
ISI. The hybrid of adaptive array and equalizer (HAE) uses a modified training sequence to adjust the weights of adaptive
array that leads the array to cancel only the co-channel interference (CCI). The ISI are removed by the equalizer following
the array. Thus, the HAE can combat the above problems successfully. Though the HAE improves the performance of AE, a transversal
filter is added to generate the modified training sequence. Besides, the weights of equalizer in the HAE, which adjust after
the weights of adaptive array, will make the convergent rate slowly. A simple hybrid of adaptive array and equalizer (SHAE)
utilizes the output signal of system to adjust the weights of both the adaptive array and equalizer simultaneously. Therefore,
the convergent rate of the HAE can improve by the SHAE. Moreover, the ISI can be suppressed by the equalizer instead of the
adaptive array in the SHAE that will improve the performance of AE without using the transversal filter. As the mutual coupling
present, the convergent rate of the SHAE will slow down. In this paper, a least mean square error algorithm with mutual coupling
present is proposed to improve the convergent rate of SHAE, also. 相似文献