Tight Bounds for Ergodic Capacity of Cooperative Relaying over Rayleigh Fading Channels
Computational Intelligence and Communication Networks(2014)
摘要
In this letter, a closed-form expression for the exact ergodic capacity of decode-and-forward (DF) systems is derived. Since the closed-form expression includes exponential integral functions and is not mathematically tractable, we simplify the expression by using Taylor series to obtain the lower and upper bounds of the ergodic capacity. However, the bounds may be loose in low signal-to-noise ratio (SNR). Integral inequalities are applied to get tighter bounds. The simulation results also show that our closed-form bounds match perfectly with the exact ergodic capacity in moderate and high SNR.
更多查看译文
关键词
relay networks (telecommunication),ergodic capacity,decode-and-forward systems,integral equations,exponential integral functions,decode and forward communication,decode-and-forward (df),rayleigh fading,cooperative communication,df systems,taylor series,rayleigh fading channels,low signal-to-noise ratio,exact ergodic capacity,cooperative relaying,channel capacity,integral inequalities,functions,closed-form expression,rayleigh channels,upper bound,wireless communication,signal to noise ratio,fading
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络