Error exponents for backhaul-constrained parallel relay networks
Error exponents for backhaul-constrained parallel relay networks
复制标题
回程约束并行中继网络的误差指数
DOI：
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发表时间：
2010
期刊：
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通讯作者：
D. Gesbert
中科院分区：
文献类型：
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作者：
E. Yilmaz;R. Knopp;D. Gesbert
在本文中，我们评估了与平行继电器网络的decode-and-and-and-therw（df），压缩和前向（CF）的随机编码误差指数（EES）（EES）（df），压缩和前向（CF）（QF）中继网络（QF）中继网络（QF）中继网络（ PRN），由一个源和两个继电器组成。此外，通过数值分析，我们表明，通过使用QF继电器与非高斯信号（编码调制，M-QAM）一起实现的EE，在源和符号均匀统一的标量量化器（USQ）中，继电器比继电器更好当系统处于低信噪比（SNR）状态和回程容量的较低时，DF和CF中继策略实现了这一点。这种行为是由于编码调制的结构，而不是高斯信号传导，这与其更复杂的对应物相比，这为简单的继电器策略提供了更好的EES。
In this paper, we assess the random coding error exponents (EEs) corresponding to decode-and-forward (DF), compress-and-forward (CF) and quantize-and-forward (QF) relaying strategies for a parallel relay network (PRN), consisting of a single source and two relays. Moreover, through numerical analysis we show that the EEs achieved by using QF relaying along with non-Gaussian signaling (coded modulation, M-QAM) at the source and symbol-by-symbol uniform scalar quantizers (uSQs) at the relays is better than that achieved by DF and CF relaying strategies when the system is in the low signal-to-noise ratio (SNR) regime and the backhaul capacity is sufficient. This behavior is due to the structure of coded modulation, as opposed to Gaussian signaling, which leads to better EEs for simple relaying strategies compared to its more complex counterparts.