US 7,890,144 B2 · Successive interference cancellation receiver processing with selection diversity

Abstract

Techniques are provided to support successive interference cancellation (SIC) receiver processing with selection diversity whereby each of NT transmit antennas may be turned on or off. One symbol stream may be transmitted from each transmit antenna. A SIC receiver recovers the transmitted symbol streams in a specific order. Up to NT! orderings are evaluated. For each ordering, NT post-detection SNRs are obtained for NT transmit antennas and used to determine NT data rates, where the data rate is zero if the post-detection SNR is worse than a minimum required SNR. An overall data rate is computed for each ordering based on the NT data rates. The ordering with the highest overall data rate is selected for use. Up to NT symbol streams are processed at the data rates for the selected ordering and transmitted. The transmitted symbol streams are recovered in accordance with the selected ordering.

Claims12

Dependent claims

A method of determining a data transmission in a multiple-input multiple-output (MIMO) communication system, comprising:

determining a data rate for each of a plurality of transmit antennas, for each order of a plurality of orders of decoding a plurality of symbol streams based on a post-detection SNR;
computing an overall data rate for each order for the plurality of transmit antennas based on each data rate of a plurality of data rates for each order;
and
using a processor coupled with a memory operative in selecting one order of the plurality of orders based on each of the overall data rates.

1 more element

Dependencies are inferred from the claim text.

Successive interference cancellation receiver processing with selection diversity

Life of this patent

Successive interference cancellation receiver processing with selection diversity

Life of this patent

Abstract

Claims12