Multi-mode terminal in a wireless MIMO system

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United States of America Patent

PATENT NO 8203978
APP PUB NO 20080069015A1
SERIAL NO

11947415

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Abstract

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A user terminal supports multiple spatial multiplexing (SM) modes such as a steered mode and a non-steered mode. For data transmission, multiple data streams are coded and modulated in accordance with their selected rates to obtain multiple data symbol streams. These streams are then spatially processed in accordance with a selected SM mode (e.g., with a matrix of steering vectors for the steered mode and with the identity matrix for the non-steered mode) to obtain multiple transmit symbol streams for transmission from multiple antennas. For data reception, multiple received symbol streams are spatially processed in accordance with the selected SM mode (e.g., with a matrix of eigenvectors for the steered mode and with a spatial filter matrix for the non-steered mode) to obtain multiple recovered data symbol streams. These streams are demodulated and decoded in accordance with their selected rates to obtain multiple decoded data streams.

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Patent Owner(s)

  • QUALCOMM INCORPORATED

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Howard, Steven J Ashland, US 126 11505
Ketchum, John W Harvard, US 146 14137
Wallace, Mark S Beford, US 127 8566
Walton, J Rodney Carlisle, US 87 5697

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