Coding for specular and scatter channels [Comments on "A limit for the probability of error for largest-of-selection" by F.G. Splitt]

Splitt's correspondence (ibid., vol CS-11, Dec 1963, pp 494-496), which contained results on error probabilities for noncoherent N-ary frequency and time-shift keying systems, has spurred the present author to communicate asymptotic results which apply to rather general expressions derived in for the slowly varying Rician channel. This channel is known to occm in several physical situations, e.g., high-frequency teletype and tropospheric scatter links.