US 10,098,121 B2 · Iterative receiver and methods for decoding uplink wireless communications

Abstract

Methods and devices are disclosed for decoding multiple sparsely encoded data sequences in a wireless communications network. A received signal carrying multiple sparsely encoded data sequences is decoded by selecting a first plurality of the data sequences and performing multi-user decoding on the received signal to decode the first plurality of data sequences. Other data sequences are treated as noise. The plurality of data sequences is selected to meet a collision threshold for the multi-user decoding. Data sequences may be selected based on a collision contribution and signal quality metrics. A modified received signal is generated to remove signals associated with the multiple sparsely encoded data sequences which have been successfully decoded. The method may be performed for additional iterations to select a new plurality of data sequences, and perform the multi-user decoding on the modified received signal to decode additional data sequences, until a stopping condition is met.

Claims22

Dependent claims

A method for decoding data comprising:

receiving a signal carrying multiple sparsely encoded data sequences;
performing multi-user decoding on the received signal to decode a selected first set of the received sparsely encoded data sequences;
when, after performing the multi-user decoding, there remains at least one sparsely encoded data sequence which has not been successfully decoded:
generating a modified received signal based on one or more sparsely encoded data sequences of the first set of sparsely encoded data sequences which have been successfully decoded;
and
performing multi-user decoding on the modified received signal to decode a selected second set of the received sparsely encoded data sequences, the second set of the received sparsely encoded data sequences being selected from the at least one sparsely encoded data sequence which has not been successfully decoded.

3 more elements

A wireless device comprising:

a communications interface;
a processor;
and
one or more non-transitory computer readable media having computer readable instructions stored thereon for transmitting and receiving data through the communications interface, the instructions, when executed by the processor, direct the wireless device to:
receive a signal carrying multiple sparsely encoded data sequences;
perform multi-user decoding on the received signal to decode a selected first set of the received sparsely encoded data sequences;
when, after performing the multi-user decoding, there remains at least one sparsely encoded data sequence which has not been successfully decoded:
generate a modified received signal based on one or more sparsely encoded data sequences of the first set of sparsely encoded data sequences which have been successfully decoded;
and
perform multi-user decoding on the modified received signal to decode a selected second set of the received sparsely encoded data sequences, the second set of the received sparsely encoded data sequences being selected from the at least one sparsely encoded data sequence which has not been successfully decoded.

7 more elements

Dependencies are inferred from the claim text.

Iterative receiver and methods for decoding uplink wireless communications

Life of this patent

Iterative receiver and methods for decoding uplink wireless communications

Life of this patent

Abstract

Claims22