APPARATUS AND METHOD FOR UPLINK ADAPTIVE PILOT SIGNAL SPACE SWITCHING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS SYSTEM

摘要

An apparatus and a method for adjusting uplink adaptive pilot signal interval in OFDM are provided to adjust an interval of the pilot signal according to channel correlation of a mobile terminal in uplink of OFDM system. The average channel characteristic of a mobile terminal is recognized(501). An optimal pilot interval is determined through the recognized average channel characteristic of the mobile terminal(503). The determined optimal pilot interval is compared with the pilot interval of current used terminal(505). The necessity of pilot interval adjusting is determined if the determined optimal pilot interval is different from the pilot interval of the current used terminal. If the pilot interval adjustment is needed, a request for adjusting the pilot interval is transmitted(509).