Systems and methods for delta-sigma digitization
AssigneeCable Television Laboratories, Inc.
InventorsJing Wang, Luis Alberto Campos, Zhensheng Jia
Life of this patent
Estimating the term…
Abstract
A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.
Claims20
A delta-sigma digitization interface for modulating an input analog carrier signal into a digitized bit stream, comprising:
- a sampling unit configured to sample the input analog carrier signal at a predetermined sampling rate to produce a sampled analog signal;
- a delta-sigma analog-to-digital converter (ADC) configured to quantize the sampled analog signal into the digitized bit stream according to a predetermined number of quantization bits;
- and
- an output port for transmitting the digitized bit stream to a transport medium.
The interface of claim 4, wherein the binary quantization protocol comprises on-off keying.
A communication system, comprising:
- a core network;
- a central unit (CU) in operable communication with the core network;
- at least one distributed unit (DU) different from, and in operable communication with, the CU;
- and
- at least one radio resource unit (RRU) in operable communication with the at least one DU over a next generation fronthaul interface (NGFI) split option from the at least one DU.
Dependencies are inferred from the claim text.