| 摘要 |
Frequency-independent eigensteering in MISO and MIMO systems are described. For principal mode and multi-mode eigensteering, a correlation matrix is computed for a MIMO channel based on channel response matrices and decomposed to obtain N<SUB>S </SUB>frequency-independent steering vectors for N<SUB>S </SUB>spatial channels of the MIMO channel. N<SUB>D </SUB>data symbol streams are transmitted on N<SUB>D </SUB>best spatial channels using N<SUB>D </SUB>steering vectors, where N<SUB>D</SUB>=1 for principal mode eigensteering and N<SUB>D</SUB>>1 for multi-mode eigensteering. For main path eigensteering, a data symbol stream is transmitted on the best spatial channel for the main propagation path (e.g., with the highest energy) of the MIMO channel. For receiver eigensteering, a data symbol stream is steered toward a receive antenna based on a steering vector obtained for that receive antenna. For all eigensteering schemes, a matched filter is derived for each receive antenna based on the steering vector(s) and channel response vectors for the receive antenna.
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