Bounds on the Lambert Function and Their Application to the Outage Analysis of User Cooperation.
Communications Letters, IEEE(2016)
摘要
Problems formulated in terms of logarithmic or exponential equations often use the Lambert W function in their solutions. Expansions, approximations and bounds on W have been derived in an effort to gain a better understanding of the relationship between equation parameters. In this paper, we focus on one of the branches of W, denoted as W -1 , we derive tractable upper and lower bounds and we illustrate their usefulness in identifying conditions under which user cooperation can yield a lower outage probability than non-cooperative transmission.
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关键词
Signal to noise ratio,Upper bound,Uplink,Fading,Wireless communication,Wireless sensor networks,Equations
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