Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-06-20
2006-06-20
Kim, Kevin (Department: 2638)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S299000, C375S347000
Reexamination Certificate
active
07065144
ABSTRACT:
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 NSfrequency-independent steering vectors for NSspatial channels of the MIMO channel. NDdata symbol streams are transmitted on NDbest spatial channels using NDsteering vectors, where ND=1 for principal mode eigensteering and ND>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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Howard Steven J.
Ketchum John W.
Wallace Mark S.
Walton J. Rodney
Kim Kevin
Milikovsky Dmitry R.
Minhas Sandip (Micky) S.
QUALCOMM Incorporated
Wadsworth Phillip W.
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