ВРЕМЕННАЯ ФИЛЬТРАЦИЯ ДЛЯ УМЕНЬШЕНИЯ ИЗБЫТОЧНОЙ ЗАДЕРЖКИ В СИСТЕМАХ С OFDM

摘要

Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, time filtering is utilized. Time filtering is utilized to combat excess delay spread effects in channel estimation. The time filtering is performed in the presence of staggered pilots and helps in improving the channel estimate in the presence of excess delay spread.