| 摘要 |
A wireless communication system allocates pilots, for transmission of multiple pilot streams in a multiple-input-multiple-output (MIMO) system, which uses orthogonal frequency division multiplexing (OFDM). In one embodiment, the pilot allocation is applied in a contiguous frame structure, and two pilots are allocated for each pilot stream in a structure comprising 18 subcarriers and 6 OFDM symbols. 8 pilot streams are grouped into two pilot stream clusters, and pilots for each pilot stream cluster are grouped into pilot clusters. Four pilot clusters are then allocated in a first frame structure, and the allocation of the pilot clusters in a second frame structure corresponds to those in the first frame structure. |
