Optimization of Linearly Equalized QAM
Optimization of Linearly Equalized QAM
复制标题
线性均衡 QAM 的优化
DOI：
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发表时间：
1987
影响因子：
8.3
通讯作者：
I. Kalet
中科院分区：
文献类型：
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作者：
I. Kalet
在具有线性失真和加性高斯白噪声的信道上传输的QAM信号可以在接收器处被线性均衡以消除码间干扰。如果QAM信号是功率受限的，并且需要给定的符号误码率，我们证明了通过优化符号速率和比特/符号数目来最大化该系统的比特率是可能的。在接收端假设理想的线性均衡，以克服信道引入的失真。例如，选择高斯信道，并且最大化该信道的比特率。QAM最大化对于具有缓慢衰落的信道衰减特性的信道特别有用，例如双绞线信道。
A QAM signal transmitted over a channel with linear distortion and additive white Gaussian noise can be linearly equalized at the receiver to eliminate intersymbol interference. If the QAM signal is power constrained and a given symbol error rate is required, we show that it is possible to maximize the bit rate of this system by optimizing the symbol rate and the number of bits/symbol. Ideal linear equalization is assumed at the receiver to overcome the distortion introduced by the channel. As an example, a Gaussian channel is chosen, and the bit rate is maximized for this channel. The QAM maximization is especially useful for channels with slowly decaying channel attenuation characteristics, e.g., the twisted-pair channel.