CN1708936B

5G,4G,3G

Title

Multi-mode terminal in a wireless MIMO system

Application Number:

CN20038102100

Publication Date:

11-05-2011

Current Assignee:

QUALCOMM INC

Family ID:

32179859

Application Date:

24-10-2003

Publication Country:

US

View on Espacenet

Priority Date:

25-10-2002

Declaring Company:

QUALCOMM INC

Abstract  Abstract

a user terminal supports multiple spatial multiplexing (SM) mode such as controlled mode and a controlled mode. For data transmission multiple data streams is encoded and modulated according to their selected rate to obtain multiple data symbol streams. then according to the selected SM mode spatial processing for these streams (such as by controlled vector for the controlled mode of matrix for a controlled mode using a unit matrix) to obtain a plurality of emitting emitted symbol streams from the plurality of antennas. For data reception according to the selected SM mode received a plurality of symbol streams is spatially processed (e.g. composed of eigenvectors for the controlled mode of matrix for a controlled mode using a spatial filtering matrix) to obtain a plurality of recovered data symbol streams. These stream according to their selected rate is demodulated and decoded to obtain the decoded plurality of data stream.

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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