Bit interleaving of modulation symbol mapping for data carrying reference signals

A wireless device, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:
• generate a first plurality of bits corresponding to a first set of resource elements allocated for data transmissions and a second plurality of bits corresponding to a second set of resource elements allocated for data-carrying reference signals, wherein the first plurality of bits corresponds to a first coding rate and a first modulation order and the second plurality of bits corresponds to the first coding rate and a second modulation order that is lower than the first modulation order;
• write the first plurality of bits and the second plurality of bits into a bitstream in accordance with an interleaving table, wherein the second plurality of bits are located in a first subset of rows of the interleaving table corresponding to most significant bits, and one or more entries in the interleaving table of a second subset of rows corresponding to least significant bits of the second set of resource elements are unoccupied;
• map the bitstream to a plurality of constellation points in accordance with the interleaving table, wherein a quantity of the plurality of constellation points is in accordance with the first modulation order;
• and
• transmit the bitstream based at least in part on the mapping.

A wireless device, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the wireless device to:
• receive control signaling indicating a first interleaving table and a second interleaving table, the first interleaving table comprising a first quantity of rows corresponding to a first modulation order, and the second interleaving table comprising a second quantity of rows corresponding to a second modulation order;
• generate a first plurality of bits corresponding to a first set of resource elements allocated for data transmissions and a second plurality of bits corresponding to a second set of resource elements allocated for data-carrying reference signals, wherein the first plurality of bits corresponds to a first coding rate and the first modulation order and the second plurality of bits corresponds to the first coding rate and the second modulation order that is lower than the first modulation order;
• write the first plurality of bits into a bitstream in accordance with the first interleaving table, and the second plurality of bits into the bitstream in accordance with the second interleaving table;
• and
• transmit the bitstream in accordance with the writing.

A method for wireless communications at a wireless device, comprising:

• generating a set of bits comprising a first plurality of bits corresponding to a first set of resource elements allocated for data transmissions and a second plurality of bits corresponding to a second set of resource elements allocated for data carrying reference signals, wherein the first plurality of bits corresponds to a first coding rate and a first modulation order and the second plurality of bits corresponds to the first coding rate and a second modulation order that is lower than the first modulation order;
• writing the set of bits comprising the first plurality of bits and the second plurality of bits into a bitstream in accordance with an interleaving table, wherein one or more most significant bits are located in a first subset of rows of the interleaving table and one or more less significant bits are located in a second subset of rows of the interleaving table;
• mapping the first plurality of bits of the bitstream to a plurality of constellation points and the second plurality of bits of the bitstream to a subset of the plurality of constellation points in accordance with the interleaving table, wherein a quantity of the plurality of constellation points is in accordance with the first modulation order, and a quantity of the subset of the plurality of constellation points is in accordance with the second modulation order;
• and
• transmitting the bitstream based at least in part on the mapping.