Closed-form expressions for the probability density function of macroscopic maximal ratio combining output SNR were derived by means of moment generating function and Gauss-Hermite quadrature, and outage analysis was considered for different parameter schemes over Nakagami-Lognormal channels. 利用矩生成函数和高斯-厄米特积分推导出Nakagami-Lognormal信道环境下宏最大比合并系统输出信噪比概率密度函数的闭式表示,并由此分析了系统的中断概率。