Sequence design for noncoherent transmission with frequency and timing errors

A method for wireless communications at a base station, comprising:

• determining, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmitting, to a user equipment (UE), an indication of the configuration that repeats the sequence over the resource allocation;
• receiving, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• and
• performing error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• wherein determining the configuration comprises:
• receiving one or more transmissions received over a channel;
• and
• determining the configuration based at least in part on the one or more transmissions received over the channel or a channel condition of the channel, or both.

A method for wireless communications at a base station, comprising:

• determining, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmitting, to a user equipment (UE), an indication of the configuration that repeats the sequence over the resource allocation;
• receiving, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• performing error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• determining the configuration to repeat the sequence in a time domain, and wherein performing the error correction comprises;
• and
• performing frequency error correction on the data based at least in part on the sequence being repeated in the time domain.

A method for wireless communications at a base station, comprising:

• determining, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmitting, to a user equipment (UE), an indication of the configuration that repeats the sequence over the resource allocation;
• receiving, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• performing error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• determining the configuration to repeat the sequence in a frequency domain, and wherein performing the error correction comprises:
• performing timing error correction on the data based at least in part on the sequence being repeated in the frequency domain.

A method for wireless communications at a base station, comprising:

• determining, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmitting, to a user equipment (UE), an indication of the configuration that repeats the sequence over the resource allocation;
• receiving, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• performing error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• determining the configuration to repeat the sequence in a time domain and a frequency domain, wherein performing the error correction comprises:
• performing timing error correction on the data based at least in part on the sequence being repeated in the frequency domain;
• and
• performing frequency error correction on the data based at least in part on the sequence being repeated in the time domain.

An apparatus for wireless communications at user equipment (UE), comprising:

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• receive, from a base station, an indication of a configuration that repeats a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying a data;
• and
• transmit, to the base station, at least a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• wherein the plurality of sequences comprises orthogonal sequences when a size of the data does not satisfy a data threshold, and wherein the plurality of sequences comprises non-orthogonal sequences when the size of the data satisfies the data threshold.

An apparatus for wireless communications at a base station, comprising:

• a processor,
• memory coupled with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• determine, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmit, to the UE, an indication of the configuration that repeats the sequence over the resource allocation;
• receive, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• and
• perform error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• wherein determining the configuration comprises:
• receiving one or more transmissions received over a channel;
• and
• determining the configuration based at least in part on the one or more transmissions received over the channel or a channel condition of the channel, or both.

A method for wireless communications at a base station, comprising:

• determining, a configuration for repeating a sequence from a plurality of sequences over a resource allocation, the plurality of sequences configured for conveying data;
• transmitting, to a user equipment (UE), an indication of the configuration that repeats the sequence over the resource allocation;
• receiving, from the UE, a first instance of the sequence and a second instance of the sequence based at least in part on the configuration;
• and
• performing error correction on the data based at least in part on the first instance of the sequence and the second instance of the sequence;
• determining the configuration to repeat the sequence in a time domain and/or a frequency domain, wherein performing the error correction comprises:
• when determining the configuration to repeat the sequence in the frequency domain, performing timing error correction on the data based at least in part on the sequence being repeated in the frequency domain;
• and
• when determining the configuration to repeat the sequence in the time domain, performing frequency error correction on the data based at least in part on the sequence being repeated in the time domain.