Nakagami

Nakagami is a Japanese surname. It is of Japanese origin and is used by several individuals in Japan and among Japanese communities abroad. The name can be written with different kanji forms depending on family history.

In statistics and wireless communications, Nakagami refers to the Nakagami distribution, also known as the Nakagami-m distribution. It is a flexible two-parameter family used to model the amplitude of multipath fading in radio channels. The distribution is characterized by a shape parameter m > 0 and a spread parameter Ω > 0. It generalizes the Rayleigh distribution; with m = 1 the Nakagami distribution reduces to Rayleigh, and as m increases the distribution concentrates more around its mean, indicating less severe fading. The distribution has analytical expressions for its probability density function, cumulative distribution function, and moments, making it convenient for performance analysis.

Beyond its mathematical use, the surname Nakagami is found among professionals in science, engineering, and the arts in Japan.