Single codeword, multi-layer serial interference cancellation (SIC) for spatial multiplexing
Aspects of the subject disclosure can include, for example, associating a first logical codeword with HARQ identifier, wherein the first logical codeword is based on a first plurality of channel-encoded codewords of a first plurality of transport blocks. The first logical codeword is associated with multiple layers of a MIMO system to obtain a logical codeword mapping. In response to detecting an error in one of the channel-encoded codewords, a modified first logical codeword is generated based on the one channel-encoded codeword and mapped to the number of layers of the MIMO s system for transmission to the receiver for further processing associated with the HARQ identifier. Other embodiments are disclosed.
1. A method, comprising:
associating, by a processing system including a processor, a first logical codeword with a hybrid automatic-receive-request (HARQ) process identifier, wherein the first logical codeword is based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks;
mapping, by the processing system, the first logical codeword to a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, wherein a MIMO signal is wirelessly transmitted to a receiver configured to perform MIMO detection of the MIMO signal and to obtain independent error detection results for each of the channel-encoded codewords of the first logical codeword; and
in response to detecting an error in a channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword:
generating, by the processing system, a modified first logical codeword based on the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is associated with the HARQ process identifier, and wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier.
2. The method of claim 1 , wherein the generating of the modified first logical codeword comprises:
identifying, by the processing system, the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword; and
generating, by the processing system, a second plurality of channel-encoded codewords comprising the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is based on the second plurality of channel-encoded codewords.
3. The method of claim 2 , wherein the generating of the second plurality of channel-encoded codewords further comprises:
including, by the processing system, more than one copies of the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword.
4. The method of claim 1 , wherein the generating of the modified first logical codeword is based on the first plurality of channel-encoded codewords.
5. The method of claim 1 , wherein the first plurality of channel-encoded codewords are equal length.
6. The method of claim 1 , wherein a total number of the first plurality of transport data blocks is equivalent to a total number of the plurality of layers of the MIMO spatial multiplexing system.
7. The method of claim 1 , wherein a ratio of a total number of the plurality of layers of the MIMO spatial multiplexing system to a total number of the first plurality of transport data blocks is an integer value greater than one.
8. A device, comprising:
a processing system including a processor; and
a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising:
associating a first logical codeword based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks, with a hybrid automatic-receive-request (HARQ) process identifier;
mapping the first logical codeword to a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, wherein a MIMO signal is wirelessly transmitted to a receiver configured to perform MIMO detection of the MIMO signal and to obtain error detection results for each of the channel-encoded codewords of the first logical codeword; and
in response to a detection of an error in a channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword:
determining a modified first logical codeword based on the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is associated with the HARQ process identifier, and wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier.
9. The device of claim 8 , wherein the determining of the modified first logical codeword further comprises:
identifying the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword; and
determining a second plurality of channel-encoded codewords comprising the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is based on the second plurality of channel-encoded codewords.
10. The device of claim 9 , wherein the determining of the second plurality of channel-encoded codewords further comprises:
including more than one copies of the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword.
11. The device of claim 8 , wherein the determining of the modified first logical codeword is based on the first plurality of channel-encoded codewords.
12. The device of claim 8 , wherein the first plurality of channel-encoded codewords are equal length.
13. The device of claim 8 , wherein a total number of the first plurality of transport data blocks is equivalent to a total number of the plurality of layers of the MIMO spatial multiplexing system.
14. The device of claim 8 , wherein a ratio of a total number of the plurality of layers of the MIMO spatial multiplexing system to a total number of the first plurality of transport data blocks is an integer value greater than one.
15. A non-transitory, machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, comprising:
associating a first logical codeword based on a first plurality of channel-encoded codewords of a first plurality of transport data blocks, with a hybrid automatic-receive-request (HARQ) process identifier;
associating the first logical codeword with a plurality of layers of a multiple-input-multiple-output (MIMO) spatial multiplexing system to obtain a logical codeword mapping, wherein a MIMO signal is wirelessly transmitted to a receiver configured to perform MIMO detection of the MIMO signal and to obtain independent error detection results for each of the channel-encoded codewords of the first logical codeword; and
in response to the independent error detection results identifying an error in a channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword:
generating a modified first logical codeword based on the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is associated with the HARQ process identifier, and wherein the modified first logical codeword is mapped to the plurality of layers of the MIMO spatial multiplexing system for transmission to the receiver for further processing associated with the HARQ process identifier.
16. The non-transitory, machine-readable storage medium of claim 15 , wherein the identifying of the modified first logical codeword comprises:
identifying the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword; and
determining a second plurality of channel-encoded codewords comprising the channel-encoded codeword of the first plurality of channel-encoded codewords, wherein the modified first logical codeword is based on the second plurality of channel-encoded codewords.
17. The non-transitory, machine-readable storage medium of claim 16 , wherein the determining of the second plurality of channel-encoded codewords further comprises:
including more than one copies of the channel-encoded codeword of the first plurality of channel-encoded codewords of the first logical codeword.
18. The non-transitory, machine-readable storage medium of claim 15 , wherein the generating of the modified first logical codeword is based on the first plurality of channel-encoded codewords.
19. The non-transitory, machine-readable storage medium of claim 15 , wherein the first plurality of channel-encoded codewords are equal length.
20. The non-transitory, machine-readable storage medium of claim 15 , wherein a total number of the first plurality of transport data blocks is equivalent to a total number of the plurality of layers of the MIMO spatial multiplexing system.