| 摘要 |
A method of selecting in a DECT-type radio communications system in which the mobile stations have antenna diversity, i.e. two antennas (A1, A2), that antenna which will provide the best reception quality (e.g. the smallest bit error rate). The radio system transmits the messages, which include a preamble, i.e. an introductory part (P), prior to the actual message information (D). This message preamble includes a specific bit pattern 01010101... and can be used to synchronize the receiver of the mobile station. According to the proposed method, the bit pattern is divided into two parts (P1 and P2). Upon receipt of the message, the first part (P1) is used to assess the reception quality of one antenna and the second part (P2) is used to assess the reception quality of the second antenna. The measured qualities are then compared and that antenna which is found to have the best reception quality is selected to receive the following information message (D). |
