| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To maximize diversity for data transmission over as many dimensions as possible for obtaining strong characteristics. <P>SOLUTION: For transmission diversity in a multi-antenna OFDM system, a transmitter encodes, interleaves, and symbol maps traffic data to obtain data symbols. The transmitter processes each pair of data symbols to obtain two pairs of transmission symbols for transmission from a pair of antennas either (1) in two OFDM symbol periods for space-time transmission diversity or (2) on two subbands for space-frequency transmission diversity. N<SB>T</SB>(N<SB>T</SB>-1)/2 different antenna pairs are used for data transmission, along with different antenna pairs being used for adjacent subbands, where N<SB>T</SB>is the number of antennas. The system may support multiple OFDM symbol sizes. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
