| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide techniques for channel estimation, timing acquisition, and MIMO format detection for a multiple antenna communication system. <P>SOLUTION: A multiple antenna receiver can distinguish a MIMO transmission from other transmissions based on the detection of a predefined symbol following a legacy portion of a preamble. The preamble comprises a legacy portion and an extended portion. The legacy portion is composed of a first long preamble followed by a first signal field. The extended portion comprises the predefined symbol following the first signal field. If the predefined symbol is a second long preamble, a MIMO transmission is detected by performing a correlation on the preamble. If the predefined symbol is a second long signal field, a MIMO transmission is detected by performing a cyclic redundancy check. <P>COPYRIGHT: (C)2012,JPO&INPIT |
