On the pilot spacing constraints for continuous time-varying fading channels
On the pilot spacing constraints for continuous time-varying fading channels
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DOI：
10.1109/tcomm.2009.11.080024
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发表时间：
2009-11
影响因子：
8.3
通讯作者：
S. Savazzi;U. Spagnolini
中科院分区：
文献类型：
--
作者：
S. Savazzi;U. Spagnolini
在常见的无线系统中，导频放置可以被解释为以某种程度的准确度对信道进行采样的方式。在这封信中，我们调查的必要条件的导频间距随时间变化的衰落，以保证指定的平均误比特率。这些约束条件进行评估，在封闭的形式为大SNR和小的衰落动态和专门为不同的衰落相关性和编码/未编码的二进制传输。
In common wireless systems pilot placing can be interpreted as a way to sample the channel with some degree of accuracy. In this letter we investigate the necessary conditions on the pilots spacing for time-varying fading to guarantee a specified average bit error rate. These constraints are evaluated in closed form for large SNR and small fading dynamics and specialized for varying fading correlation and coded/uncoded binary transmissions.