| 摘要 |
The present invention relates to a communication device for transmitting and receiving OFDM signals in a wireless communication system, the communication device comprises antenna means (10) having a plurality of antenna elements (12) for transmitting and receiving said OFDM signals propagated through a plurality of transmission channels in said wireless communication system and means (26) for obtaining channel information concerning phase shift properties of OFDM subcarrier signals transmitted through said plurality of transmission channels and means (30) for controlling amplitude of said OFDM subcarrier signals in accordance with said channel information, wherein said means (26) for obtaining channel information is adapted to determine a phase shift of OFDM subcarrier signals received at each of said antenna elements (12) by determining a phase difference between a predetermined portion of said limited number of OFDM subcarrier signals and a reference preamble symbol to obtain the phase shift properties of said limited number of OFDM subcarrier signals. |
