Wireless device with a non-compensated crystal oscillator

An apparatus comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• and
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples, wherein the rotator comprises:
• an accumulator operative to accumulate the frequency error estimate and provide a phase output,
• a look-up table operative to receive the phase output and provide sine and cosine of the phase output, and
• a multiplier operative to multiply the data samples with the sine and cosine to generate the frequency-translated samples.

An apparatus comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples;
• and
• at least one delta-sigma analog-to-digital converter (ΔΣ ADC) operative to digitize an analog signal based on a sampling clock and provide ADC samples, wherein the sampling clock is multiple times higher than chip rate and has the frequency error.

An apparatus comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples;
• and
• a re-clocking circuit operative to receive input samples generated based on a sampling clock having the frequency error, to re-clock the input samples based on a digital clock having at least a portion of the frequency error removed, and to provide the data samples.

An apparatus comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples;
• and
• a second rotator operative to receive data chips to be transmitted, to frequency translate the data chips based on the frequency error estimate, and to provide frequency-translated chips.

An apparatus comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples;
• and
• a searcher operative to search for pilots in each of a plurality of bins, each bin corresponding to a different range of possible frequency errors for the crystal oscillator.

An integrated circuit comprising:

• a control unit operative to estimate a frequency error of a crystal oscillator and to provide a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• a rotator operative to receive data samples having the frequency error, to frequency translate the data samples based on the frequency error estimate, and to provide frequency-translated samples;
• and
• a re-clocking circuit operative to receive input samples generated based on a sampling clock having the frequency error, to re-clock the input samples based on a digital clock having at least a portion of the frequency error removed, and to provide the data samples.

An apparatus comprising:

• means for estimating a frequency error of a crystal oscillator to obtain a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• means for frequency translating data samples based on the frequency error estimate to obtain frequency-translated samples, wherein the data samples have the frequency error;
• and
• means for re-clocking input samples based on a digital clock to obtain the data samples, wherein the input samples are generated based on a sampling clock having the frequency error, and wherein the digital clock has at least a portion of the frequency error removed.

An apparatus comprising:

• means for estimating a frequency error of a crystal oscillator to obtain a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• means for frequency translating data samples based on the frequency error estimate to obtain frequency-translated samples, wherein the data samples have the frequency error;
• and
• means for frequency translating data chips based on the frequency error estimate to obtain frequency-translated chips, wherein the frequency-translated chips are upconverted based on a transmit local oscillator (LO) signal having the frequency error.

A method comprising:

• estimating a frequency error of a crystal oscillator to obtain a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• frequency translating data samples based on the frequency error estimate to obtain frequency-translated samples, wherein the data samples have the frequency error;
• and
• re-clocking input samples based on a digital clock to obtain the data samples, wherein the input samples are generated based on a sampling clock having the frequency error, and wherein the digital clock has at least a portion of the frequency error removed.

A method comprising:

• estimating a frequency error of a crystal oscillator to obtain a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• frequency translating data samples based on the frequency error estimate to obtain frequency-translated samples, wherein the data samples have the frequency error;
• and
• frequency translating data chips based on the frequency error estimate to obtain frequency-translated chips, wherein the frequency-translated chips are upconverted based on a transmit local oscillator (LO) signal having the frequency error.

A wireless device comprising:

• an oscillator operative to provide a reference signal having a frequency error that is temperature dependent;
• a control unit operative to estimate the frequency error of the reference signal and provide a frequency error estimate;
• at least one delta-sigma analog-to-digital converter (ΔΣ ADC) operative to digitize an analog signal based on a sampling clock and provide ADC samples, wherein the sampling clock has the frequency error;
• and
• a rotator operative to frequency translate data samples based on the frequency error estimate and provide frequency-translated samples, wherein the data samples are the ADC samples or are generated based on the ADC samples.

A wireless device comprising:

• an oscillator operative to provide a reference signal having a frequency error that is temperature dependent;
• a control unit operative to estimate the frequency error of the reference signal and provide a frequency error estimate;
• at least one delta-sigma analog-to-digital converter (ΔΣ ADC) operative to digitize an analog signal based on a sampling clock and provide ADC samples, wherein the sampling clock has the frequency error;
• a rotator operative to frequency translate data samples based on the frequency error estimate and provide frequency-translated samples, wherein the data samples are the ADC samples or are generated based on the ADC samples;
• and
• a re-clocking circuit operative to re-clock input samples based on a digital clock and provide the data samples, wherein the input samples are generated based on a sampling clock having the frequency error, wherein the digital clock has at least a portion of the frequency error removed.

A controller-readable memory having instructions thereon, the instructions comprising:

• code for estimating a frequency error of a crystal oscillator to obtain a frequency error estimate, wherein the crystal oscillator is not compensated for temperature and the frequency error is temperature dependent;
• code for frequency translating data samples based on the frequency error estimate to obtain frequency-translated samples, wherein the data samples have the frequency error;
• and
• code for re-clocking input samples based on a digital clock to obtain the data samples, wherein the input samples are generated based on a sampling clock having the frequency error, and wherein the digital clock has at least a portion of the frequency error removed.