Multiple data rate communication system
AssigneeBroadcom Corporation
InventorsWilf LeBlanc, Phil Houghton, Kenneth Cheung
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Abstract
Seamless wideband support is afforded by utilizing split-band data streams. For wideband signals, the 8 kHz bandwidth is divided into a low band, with approximately 0-4 kHz bandwidth, and a high band, with approximately 4-8 kHz bandwidth. Narrowband functions and services operate on the low band, while wideband functions and services operate on both low and high bands.
Claims32
One or more circuits for processing a signal in order to integrate services for both narrow bandwidth and wide bandwidth portions of the signal, the one or more circuits comprising:
- interface circuitry for receiving the signal;
- and
- at least one processor communicatively coupled to the interface circuitry, the at least one processor operable to, at least:
- receive digitized samples of the signal, wherein the digitized samples represent frequency components of the signal in a first bandwidth,
- split the digital samples of the signal into a low band representing frequency components of the signal in a second bandwidth and a high band representing frequency components of the signal in a third bandwidth, and
- process the low band with a first function to produce a first processed signal, wherein the first function is designed for a fourth bandwidth, and wherein the second bandwidth is a subset of the fourth bandwidth.
A system for processing a signal in order to integrate services for both narrow bandwidth and wide bandwidth portions of the signal, said system comprising:
- an interface that receives digitized samples of the signal, the digitized samples representing frequency components of the signal in a first bandwidth;
- at least one processor that performs a first function on only low band frequency components of the signal in a second bandwidth, thereby producing a first processed signal, and performs a second function on high band frequency components of the signal in a third bandwidth, thereby producing a second processed signal, wherein the first function is designed for a fourth bandwidth;
- and
- wherein the second bandwidth is a subset of the fourth bandwidth.
Dependencies are inferred from the claim text.