块瑞利衰落信道下IID复高斯信号的互信息
Mutual Information of IID Complex Gaussian Signals on Block Rayleigh-faded Channels
摘要：
我们提出了一种方法来计算，快速，有效地，互信息实现的IID（独立同分布）复杂的高斯输入块瑞利衰落信道在接收端没有边信息。该方法适应标量和MIMO（多输入多输出）设置。在操作上，如此计算的互信息表示使用标准高斯码本可以获得的最高频谱效率。提供的示例说明了由快速衰落引起的频谱效率的损失以及该损失如何通过使用多个发射天线而被放大。通过与在接收机处的理想信道状态信息下的信道容量以及与通过基于导频的传输获得的频谱效率的比较，进一步丰富了这些示例。
英文摘要：
We present a method to compute, quickly and efficiently, the mutual information achieved by an IID (independent identically distributed) complex Gaussian input on a block Rayleigh-faded channel without side information at the receiver. The method accommodates both scalar and MIMO (multiple-input multiple-output) settings. Operationally, the mutual information thus computed represents the highest spectral efficiency that can be attained using standard Gaussian codebooks. Examples are provided that illustrate the loss in spectral efficiency caused by fast fading and how that loss is amplified by the use of multiple transmit antennas. These examples are further enriched by comparisons with the channel capacity under perfect channel-state information at the receiver, and with the spectral efficiency attained by pilot-based transmission.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
