Broadcom Corporation

Apple Inc.

Thirunathan Sutharsan

Wei Luo

Mohanned Omar Sinnokrot

Bin Liu

Hongwei Kong

Mark Hahm

Severine E Catreux-Erceg

Jun Wu

Steve Hengchen Hsu

Andrew Du Preez

Shuangquan Wang

On Wa Yeung

Pan Liu

Claude G Hayek

Taiyi Cheng

Mihail Petrov

Wai Chan

A processing system can perform joint de-interleaving and rate recovery on data elements from a received transmission. A load engine can write new data elements for a portion of a received code block into a de-interleaving buffer in a column-wise order. A de-rate-matching engine can read the new data elements in row-wise order from the de-interleaving buffer and combine the new data elements with stored data elements from a code-block buffer according to the position of the data elements in a code block, writing the updated data elements back to the code block buffer. The DRM engine can include a cache that stores recently updated data elements. When an address collision occurs between two update operations, the DRM engine can retrieve the recently updated data elements from the cache rather than waiting for the code block buffer.

Systems and methods for joint de-interleaving and rate recovery in a receiver

A cellular modem processor can include dedicated processing engines that implement specific, complex data processing operations. The processing engines can be arranged in pipelines, with different processing engines executing different steps in a sequence of operations. Flow control or data synchronization between pipeline stages can be provided using a hybrid of firmware-based flow control and hardware-based data dependency management. Firmware instructions can define data flow by reference to a virtual address space associated with pipeline buffers. A hardware interlock controller within the pipeline can track and enforce the data dependencies for the pipeline.

Systems and methods for synchronizing data processing in a cellular modem

A cellular modem processor can include dedicated processing engines that implement specific, complex data processing operations. To implement physical downlink shared channel (PDSCH) decoding, a cellular modem can include a pipeline having multiple processing engines, with the processing engine including functional units that execute instructions corresponding to different stages in the PDSCH decoding process. Flow control and data synchronization between instructions can be provided using a hybrid of firmware-based flow control and hardware-based data dependency management.

Instruction-based multi-thread multi-mode PDSCH decoder for cellular data device

Aspects of a method and/or system for processing high quality audio in a hardware audio CODEC for audio transmission are provided. In this regard, an audio signal may be down-sampled via a cascaded plurality of filters and sample rate converters in the hardware audio CODEC. Additionally, a portion of each sample of the audio signal may be selected based on an origin of the audio signal. The selected portion of each sample of the audio signal may comprise 16 or 18 bits. The selected portion may be determined based on a type, a class, a manufacturer identifier, and/or a model identifier of the origin the audio signal. Coefficients of the filters may be configured based on the origin of the audio signal. One or more of the filters may comprise one or more cascaded biquads. The sample rate converters may comprise one or more CIC decimation filters.

Method and system for processing high quality audio in a hardware audio codec for audio transmission

Aspects of a method and system for channel estimation for interference suppression are provided. In this regard, one or more circuits and/or processors of a mobile communication device may generate and/or receive a first set of channel estimates and a second set of channel estimates. The one or more circuits and/or processors may modify the second set of channel estimates based on a comparison of a measure of correlation between the first set of channel estimates and the second set of channel estimates with a threshold. The first set of channel estimates and/or the modified second set of channel estimates may be utilized for cancelling interference in received signals. The first set of channel estimates may be associated with a first transmit antenna of a base transceiver station and the second set of channel estimates may be associated with a second transmit antenna of the base transceiver station.

Method and system for channel estimation processing for interference suppression

A mobile device receives downlink transmissions comprising replicas of an original downlink transmitted signal over corresponding fingers of a RAKE receiver comprising arithmetic units. The RAKE receiver computes a cell normalization factor for each of active cells and neighbor cells associated with the RAKE receiver. The RAKE receiver uses the same arithmetic units comprising one adder, one multiplier, one divider and/or one square root unit to compute cell normalization factors. The received downlink transmitted signal is processed using the computed cell normalization factors. The RAKE receiver determines signal power from each of other cells, separately, to compute cell normalization factors to normalize fingers of the RAKE receiver. Interference over the normalized fingers are cancelled and used to process the received downlink transmitted signal, which are combined and Turbo decoded. Phase correction is performed over interference cancelled fingers for active cells, but need not be performed for neighbor cells.

Method and system for computing a cell normalization factor by sharing arithmetic units in a rake receiver to reduce overall implementation area

Aspects of a method and system for a programmable interference suppression module may include receiving a communication signal comprising one or more desired signal, and one or more undesired signals. The communication signal may be utilized to generate estimated channel state information. The estimated channel state information may be formatted for use in interference suppression. A reduced interference signal may be generated from a delayed version of said communications signal and the estimated channel state information, wherein the one or more undesired signals may be attenuated. The reduced interference signal may be formatted for post-processing. The desired signals may comprise WCDMA and/or HSDPA signals, and the undesired signals may be inter-cell and/or intra-cell interference. Further processing may comprise HSDPA processing and/or RAKE finger processing. The communication signal may be a Universal Mobile Telecommunication System (UMTS) compliant signal.

Method and system for a programmable interference suppression module

An audio codec integrated with baseband processing and RF on a single IC chip. The audio codec may be implemented in a variety of wireless transceivers, such as cell phones, to offer voice, data and/or music functions. The codec also has monaural and stereo channels for audio output, as well as stereo inputs.

Growing community of inventors

San Diego, CA, United States of America

Thirunathan Sutharsan