Digital to analog converter apparatus, system, and method with quantization noise that is independent of an input signal
AssigneeFuturewei Technologies, Inc.
InventorsArkady Molev Shteiman, Xiao-Feng Qi
Life of this patent
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Abstract
An apparatus, system, and method are provided for affording digital to analog converter (DAC) quantization noise that is independent of an input signal. In operation, an input signal for a DAC is received. Further, a particular signal is added to the input signal for the DAC, such that an output signal of the DAC includes quantization noise that is independent of the input signal (e.g. includes white noise, etc.), as a result of the particular signal being added to the input signal for the DAC.
Claims24
An apparatus, comprising:
- a plurality of antennas;
- a plurality of supporting circuitry coupled to the plurality of antennas,
- wherein each of the supporting circuitry comprises:
- a combiner that receives an input signal and combines the input signal with a particular signal for at least one of a plurality of antennas of a multiple-input-multiple-output (MIMO) system;
- and
- a digital to analog converter coupled to the combiner, wherein the digital to analog converter receives the combined signal from the combiner and outputs an output signal, wherein the output signal comprises a quantization noise that is independent of the input signal;
- wherein the particular signal for each of the combiners is generated utilizing a single random signal generator.
A multiple-input-multiple-output (MIMO) system, comprising:
- a plurality of antennas coupled to a plurality of supporting circuitry, wherein each of the supporting circuitry comprises:
- a combiner that receives an input signal and combines the input signal with a particular signal, and
- a digital to analog converter coupled to the combiner, wherein the digital to analog converter receives the combined signal from the combiner and outputs an output signal, wherein the output signal comprises a quantization noise that is independent of the input signal;
- wherein the MIMO system is configured such that the particular signal for each of the plurality of combiners of the MIMO system is generated by a single random signal generator.
(canceled)
(canceled)
A method for processing signals in a multiple-input-multiple-output (MIMO) system comprising a plurality of antennas coupled to a plurality of supporting circuitry, comprising:
- receiving an input signal for a digital to analog converter in each of the plurality of supporting circuitry;
- combining the input signal with a particular signal;
- wherein the particular signal for each of the plurality of antennas of the MIMO system is generated by a single random signal generator;
- transmitting the combined signal to the digital to analog converter;
- and
- outputting an output signal from the digital to analog converter that includes quantization noise that is independent of the input signal.
(canceled)
Dependencies are inferred from the claim text.