Probability of SNR Gain by Dual-Hop Relaying over Single-Hop Transmission in SISO Rayleigh Fading Channels
Probability of SNR Gain by Dual-Hop Relaying over Single-Hop Transmission in SISO Rayleigh Fading Channels
复制标题
DOI：
10.1109/lcomm.2008.080908
复制
发表时间：
2008-10
期刊：
影响因子：
--
通讯作者：
In-Ho Lee;Dongwoo Kim
中科院分区：
文献类型：
--
作者：
In-Ho Lee;Dongwoo Kim
在这封信中，我们讨论了单输入单输出（SISO）平坦瑞利衰落信道中的单跳传输上的双跳中继可实现的端到端信噪比（SNR）增益。我们处理非再生和再生中继方案。为了量化 SNR 增益，开发了 SNR 增益概率的封闭式表达式。 SNR增益的概率导致双跳中继中的每跳信道与单跳传输中的信道的平均功率比的显式函数。我们研究了平均功率比以及中继位置对 SNR 增益的影响。
In this letter, we address the end-to-end signal-to-noise ratio (SNR) gain achievable by dual-hop relaying over the single-hop transmission in single-input single-output (SISO) flat Rayleigh fading channels. We deal with both nonregenerative and regenerative relaying schemes. To quantify the SNR gain, a closed-form expression of the probability of SNR gain is developed. The probability of SNR gain results in an explicit function of an average power ratio of the per-hop channel in dual-hop relaying to the channel in the single-hop transmission. We investigate impacts of the average power ratio as well as the relaying location on the SNR gain.