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An accurate closed-form approximation of the ergodic capacity over log-normal fading channels
2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications
In wireless communications, medium-scale fading is usually modelled as a multiplicative and slowly time varying random process. The received signal r(t) can be expressed as  where ( is the average transmitted signal energy, s(t) is the transmitted signal, h(t) is the random process that characterizes the medium-scale fading, and n(t) is an additive white gaussian noise process with a double-sided variance of N o /2. The medium-scale fading is considered as log-normally distributed for any t value. In a slow-varying environment,doi:10.1109/pimrc.2008.4699410 dblp:conf/pimrc/HeliotCHT08 fatcat:ynoh5gpjojevnbpk3u3k273yym