Successive interference cancellation receiver processing with selection diversity
First Claim
1. 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.
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Accused Products
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.
32 Citations
12 Claims
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1. A method of determining a data transmission in a multiple-input multiple-output (MIMO) communication system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus in a multiple-input multiple-output (MIMO) communication system comprising:
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memory means; and processor means coupled with the memory means wherein, the processor means is operative to select one order decoding a plurality of symbol streams according to an overall data rate of each of the plurality of orders, wherein the overall data rate for each order corresponds to a plurality of data rates for each of a plurality of transmit antennas. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A processor-readable medium encoded with instructions for determining a data transmission in a multiple-input multiple-output (MIMO) communication system, the instructions comprising code for:
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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 selecting one order of the plurality of orders based on each of the overall data rates.
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Specification