Disclosed embodiments relate to isolation methods for full-duplex communication. In one example, a full-duplex antenna system includes a Tx (transmit) signal path including one or more elements each, means a power amplifier, one or more filters, and a Tx port of a Tx patch antenna operating at a Tx frequency band to transmit an outgoing signal to a satellite, the one or more elements each further including an Rx (receive) signal path including a low noise amplifier driven by an Rx port of an Rx patch antenna operating at an Rx frequency band to receive an incoming signal from the satellite, the Rx frequency band being separated by a guard band from the Tx frequency band, wherein the filters together with a physical separation between the Tx and Rx signal paths provide sufficient isolation to reduce coupling between the Tx signal path and the Rx signal path, allowing the full-duplex antenna system to operate in full-duplex.

Disclosed embodiments relate to isolation methods for full-duplex communication. In one example, a full-duplex antenna system includes a Tx (transmit) signal path including one or more elements each, means a power amplifier, one or more filters, and a Tx port of a Tx patch antenna operating at a Tx frequency band to transmit an outgoing signal to a satellite, the one or more elements each further including an Rx (receive) signal path including a low noise amplifier driven by an Rx port of an Rx patch antenna operating at an Rx frequency band to receive an incoming signal from the satellite, the Rx frequency band being separated by a guard band from the Tx frequency band, wherein the filters together with a physical separation between the Tx and Rx signal paths provide sufficient isolation to reduce coupling between the Tx signal path and the Rx signal path, allowing the full-duplex antenna system to operate in full-duplex.

The transceiver for undersea communication includes both a receiver and a transmitter. The transmitter includes a transmitter digital signal processor for converting a transmitted communication signal into a modulated transmission signal. The transmitter digital signal processor applies a modulation scheme to the transmitted communication signal during its conversion into the modulated transmission signal. The transmitter converts the modulated transmission signal into modulated electrical pulses, which are applied to electrodes to produce a modulated electric field. The receiver includes a receiving antenna formed from samarium nickelate (SmNiO.sub.3). Samarium nickelate (SNO) is known to have measurable changes in resistance responsive to changes in applied sub-volt electric potentials when the samarium nickelate is immersed in salt water, such as in an undersea environment. The electrical resistance of the receiving antenna is measured to generate a resistance variation signal, which is converted by a receiver digital signal processor into a received communication signal.

The transceiver for undersea communication includes both a receiver and a transmitter. The transmitter includes a transmitter digital signal processor for converting a transmitted communication signal into a modulated transmission signal. The transmitter digital signal processor applies a modulation scheme to the transmitted communication signal during its conversion into the modulated transmission signal. The transmitter converts the modulated transmission signal into modulated electrical pulses, which are applied to electrodes to produce a modulated electric field. The receiver includes a receiving antenna formed from samarium nickelate (SmNiO.sub.3). Samarium nickelate (SNO) is known to have measurable changes in resistance responsive to changes in applied sub-volt electric potentials when the samarium nickelate is immersed in salt water, such as in an undersea environment. The electrical resistance of the receiving antenna is measured to generate a resistance variation signal, which is converted by a receiver digital signal processor into a received communication signal.

An encoder operable to filter audio signals into a plurality of frequency band components, generate quantized digital components for each band, identify a potential for pre-echo events within the generated quantized digital components, generate an approximate signal by decoding the quantized digital components using inverse pulse code modulation, generate an error signal by comparing the approximate signal with the sampled audio signal, and process the error signal and quantized digital components. The encoder operable to process the error signal by processing delayed audio signals and Q band values, determining the potential for pre-echo events from the Q band values, and determining scale factors and MDCT block sizes for the potential for pre-echo events. The encoder operable to transform the error signal into high resolution frequency components using the MDCT block sizes, quantize the scale factors and frequency components, and encode the quantized lines, block sizes, and quantized scale factors for inclusion in the bitstream.

Techniques are disclosed for coding and decoding video captured as cube map images. According to these techniques, padded reference images are generated for use during predicting input data. A reference image is stored in a cube map format. A padded reference image is generated from the reference image in which image data of a first view contained in reference image is replicated and placed adjacent to a second view contained in the cube map image. When coding a pixel block of an input image, a prediction search may be performed between the input pixel block and content of the padded reference image. When the prediction search identifies a match, the pixel block may be coded with respect to matching data from the padded reference image. Presence of replicated data in the padded reference image is expected to increase the likelihood that adequate prediction matches will be identified for input pixel block data, which will increase overall efficiency of the video coding.

Systems and methods are provided for improving accuracy and efficiency of a context-adaptive binary arithmetic coding (CABAC) by adaptively selecting a context model specific to the characteristics of a coding unit (CU), such as the size, dimension (height and/or width), type (luma or chroma), and/or flag type (cu_palette_flag or pred_mode_flag) of the CU, that comprise: determining a characteristic of the CU; determining whether the characteristic of the CU meets a corresponding threshold; and upon determining that the characteristic of the CU meets the corresponding threshold, selecting a first context model, or upon determining that the characteristic of the CU fails to meet the corresponding threshold, selecting a second context model.

Embodiments of systems and methods for forward channel contextual error concealment and sync for virtual, augmented, or mixed reality (xR) content in connectivity-constrained environments are described. In some embodiments, a Head-Mounted Device (HMD) may include a processor; and a memory coupled to the processor, the memory having program instructions stored thereon that, upon execution by the processor, cause the HMD to: decode content received from an Information Handling System (IHS) coupled to the HMD; and handle an error in the decoded content using context information received from a sensor mounted on the HMD.

A method for processing a video stream prior to encoding, the video stream potentially comprising a film grain, the method comprising: measuring a film grain intensity in the video stream; obtaining at least one encoding rate information item associated with the video stream, in order to determine a pair of respective values for the grain intensity and encoding rate; comparing the pair values with predetermined respective threshold values in order to categorize the video stream with respect to pairs of predetermined values of grain intensity and rate; and selecting a film grain management strategy among at least four combinations based on the categorization of the video stream.

Disclosed are methods, apparatuses, and systems for encoding and decoding an image. The present invention provides an intra prediction unit receives an input image, removes high frequency ingredients by low pass filtering an encoded luma pixel value in the input image during intra prediction, and generates a prediction block by predicting a chroma pixel value by using a low pass filter (LPF) LM chroma mode for applying an LM chroma mode, which is an extended chroma mode technique for generating a prediction block by predicting the chroma pixel value by applying a correlation between color planes to the luma pixel value having removed therefrom the high frequency ingredients.