Achieving synchronization in an orthogonal time frequency space signal receiver

A signal reception method implemented on a receiver, comprising:

• receiving an orthogonal time frequency space (OTFS) modulated wireless signal comprising pilot signal transmissions and data transmissions;
• calculating an autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, wherein the pre-determined delay is equal to a time spacing between successive pilot signal transmissions;
• performing, based on the autocorrelation output, a coarse adjustment to a gain of the receiver, wherein the coarse adjustment comprises a gain increment or a gain decrement;
• and
• performing a fine adjustment to the gain of the receiver in response to a carrier phase-locked loop (PLL) of the receiver being in a tracking mode.

A wireless communication device comprising:

• a processor;
• and
• a transceiver circuitry;
• wherein the transceiver circuitry is configured for:
• receiving an orthogonal time frequency space (OTFS) modulated wireless signal comprising pilot signal transmissions and data transmissions;
• and
• wherein the processor is configured for:
• calculating an autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, wherein the pre-determined delay is equal to a time spacing between successive pilot signal transmissions;
• and
• performing, based on the autocorrelation output, a coarse adjustment to a gain of the receiver, wherein the coarse adjustment comprises a gain increment or a gain decrement;
• and
• digitizing, prior to calculating the autocorrelation, the OTFS modulated wireless signal using an analog-to-digital converter (ADC),
• wherein statistics associated with the OTFS modulated wireless signal being clipped by the ADC are collected.

A wireless communication device comprising:

• a processor;
• and
• a transceiver circuitry;
• wherein the transceiver circuitry is configured for:
• receiving an orthogonal time frequency space (OTFS) modulated wireless signal comprising pilot signal transmissions and data transmissions;
• and
• wherein the processor is configured for:
• calculating an autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, wherein the pre-determined delay is equal to a time spacing between successive pilot signal transmissions;
• and
• performing, based on the autocorrelation output, a coarse adjustment to a gain of the receiver, wherein the coarse adjustment comprises a gain increment or a gain decrement;
• and
• performing a fine adjustment to the gain of the receiver in response to a carrier phase-locked loop (PLL) of the receiver being in a tracking mode.

A wireless communication device comprising:

• a processor;
• and
• a transceiver circuitry;
• wherein the transceiver circuitry is configured for:
• receiving an orthogonal time frequency space (OTFS) modulated wireless signal comprising pilot signal transmissions and data transmissions;
• and
• wherein the processor is configured for:
• calculating an autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, wherein the pre-determined delay is equal to a time spacing between successive pilot signal transmissions;
• and
• performing, based on the autocorrelation output, a coarse adjustment to a gain of the receiver, wherein the coarse adjustment comprises a gain increment or a gain decrement,
• wherein adjustments to the gain of the receiver are tracked using a phase-locked loop (PLL).