Broadcom Corporation

Shuangquan Wang

Bin Liu

Wei Luo

Mark Hahm

Severine E Catreux-Erceg

Jun Wu

Andrew Du Preez

Thirunathan Sutharsan

Karthik Rajagopalan

Disclosed are various embodiments providing selecting various schemes for combining antenna signals for synchronization. For example, processing circuitry determines a first weight for a first antenna based on a signal strength metric of the first antenna and a second weight for a second antenna based on a signal strength metric of the second antenna. The processing circuitry receives a synchronization signal via the first antenna and the second antenna. Then the processing circuitry may weight the synchronization signal received via the first antenna according to the first weight to generate a first weighted synchronization signal and weight the synchronization signal received via the second antenna according to the second weight to generate a second weighted synchronization signal. The processing circuitry further combines the first weighted synchronization signal and the second weighted synchronization signal to generate a combined synchronization signal.

Mobile device searching using multiple antennas

A wireless system may receive a plurality of multipath signals from a plurality of transmitters and allocate per-cell modules for generating an interference suppressed signal from the multipath signals. Data symbols may be sequentially processed in the received multipath signals utilizing the per-cell modules and subtracting the processed symbols from a residual buffer storing the received multipath signals. Desired information received from one or more of the transmitters may be recovered utilizing the interference suppressed signal. Timing of the data symbols may be correlated utilizing a cell chip combiner. The data symbols may be descrambled utilizing conjugated scrambling codes associated with one of the plurality of transmitters. Orthogonal variable spreading factor (OVSF) codes may be generated utilizing a Walsh transform on the data symbols. Power levels of the OVSF codes may be estimated and estimated signals may be generated based on the OVSF codes and the estimated power levels.

Method and system for per-cell interference estimation for interference suppression

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

Aspects of a method and system for compensation of interference cancellation delay are provided. In this regard, a wireless communication device may receive one or more signals and may be operable to select, whether dynamically or statically, a processing path for processing the one or more received signals. The selected processing path may comprise one of an interference cancellation processing path and a pass-through processing path. A delay introduced by the pass-through processing path may be approximately equal to a processing delay introduced by the interference cancellation processing path. The one or more received signals may comprise HSDPA signals. The selection of processing path may be based on a measure of interference present in the one or more received signals.

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Morganville, NJ, United States of America

Shuangquan Wang