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Adaptive BER enhancement using frequency selective power distribution in DMT systems

机译：自适应BER增强在DMT系统中使用频率选择性配电

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In this paper, we will investigate the efficiency of a method used to decrease the bit error rate (BER) of practical point-to-multipoint transmission systems in data communication networks over wire lines. The main characteristic of such networks is that the channel attenuation changes slowly but randomly with time. According to our method called Frequency Selective Power Distribution (FSPD) the channel will be accurately estimated in the initialisation phase. This information will be subsequently used to establish communication in frequencies with low attenuation by spreading the saved power over the optimum channel frequency areas to achieve minimum system's BER. A permanent detection of channel deteriorations followed by a new connection establishment provides an adaptive BER enhancement and permanent connection even for strong attenuated channels. In our simulations the method is applied in a DMT system transmitting over an example channel and the results are compared to the performance of a well-known channel coding method, which applies an error correcting code with soft decoding and utilizes the whole available spectrum for transmission in order to enhance system's BER.
机译：在本文中，我们将研究用于减少线线数据通信网络中实际点对多点传输系统的误码率（BER）的方法的效率。这种网络的主要特征是信道衰减随时间缓慢而随意变化。根据我们的方法称为频率选择性配电（FSPD），将在初始化阶段准确地估计信道。随后将使用该信息通过将节省的电源扩展到最佳信道频率区域来实现最小系统的BER来建立低衰减的频率通信。即使对于强衰减通道，永久性检测通道劣化之后的通道劣化之后的渠道劣化和永久性连接也是如此。在我们的模拟中，该方法应用于在示例声道上发送的DMT系统中，并且将结果与众所周知的信道编码方法进行比较，该方法应用具有软解码的纠错码并利用整个可用频谱进行传输为了增强系统的BER。

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