The high-gain Four-Stacked Circular-Loop Array Antenna (FSLA) working as a single equilibrium feed antenna is presented and used as receiving antenna of the outdoor antenna gain measuring system in UHF TV band. The suppression effect of reflected waves and the error between available and directional gains are experimentally discussed.

This letter presents an automatic repeat request/adaptive forward error correction (ARQ/AFEC) hybrid system which adaptively alters the error-correcting capability according to channel state using a nonsystematic Reed-Solomon code. Frame efficiency is also presented.