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首页> 外文期刊>Information Theory, IEEE Transactions on >Communication by Energy Modulation: The Additive Exponential Noise Channel
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Communication by Energy Modulation: The Additive Exponential Noise Channel

机译：通过能量调制进行通信：附加指数噪声通道

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摘要

Communication across an additive exponential noise (AEN) channel is studied. The AEN channel is derived from a continuous-time Gaussian channel by assuming decoherence between the signal and noise components. Decoherence renders impossible the use of the complex amplitude and information is transmitted by modulating the signal energy. The AEN channel is shown to perform closely—in terms of channel, information rate, and error probability of binary codes, including the use of bit-interleaved coded modulation—to an equivalent discrete-time Gaussian channel of identical signal-to-noise ratio. Constellations are designed for low signal-to-noise ratios, where the minimum energy per bit is not universally attained by all modulations, and for high signal-to-noise ratios, where an equiprobable nonuniform constellation 0.76 dB away from capacity is described. The multiple-access AEN channel is also considered: its capacity region coincides with that of the Gaussian equivalent; feedback does not, however, enlarge the capacity region.
机译：研究了加性指数噪声（AEN）通道之间的通信。通过假设信号和噪声分量之间的去相干性，从连续时间高斯信道中得出AEN信道。去相干使得不可能使用复振幅，并且通过调制信号能量来传输信息。在信道，信息率和二进制代码的错误概率（包括使用比特交织的编码调制）方面，AEN信道表现出与具有相同信噪比的等效离散时间高斯信道非常接近。星座图设计用于低信噪比（其中并非所有调制都普遍获得每比特的最小能量），以及高信噪比（此处描述的是距容量0.76 dB的等概率非均匀星座图）。还考虑了多址AEN信道：其容量区域与高斯等效信道的容量区域重合；反馈不会扩大容量区域。

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