| 摘要 |
The present invention provides a channel estimate enhancer for use with a multiple-input, multiple-output (MIMO) transmitter employing N transmit antennas, where N is at least two. In one embodiment, the channel estimate enhancer includes a first preamble generator that produces a basic preamble configured to provide gain training and channel estimation sequences to one of the N transmit antennas during initial time intervals. Additionally, the channel estimate enhancer also includes a second preamble generator, coupled to the first preamble generator, that produces supplementary preambles configured to provide a set of gain enhancing channel estimation sequences to each of (N-1) remaining transmit antennas during (N-1) corresponding sets of subsequent time intervals.
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