Broadcom Corporation

Joseph Boccuzzi

Nelson Ray Sollenberger

Zoran Kostic

Mark Hahm

Severine E Catreux-Erceg

Huaiyu (Hanks) Zeng

Hendrik Johannes Conroy

Li Fung Chang

Junqiang Li

A baseband processing module includes an RX interface, a rake receiver combiner module, and may include additional components. The RX interface receives the baseband signals from an RF front end and creates baseband RX signal samples there from. The rake receiver combiner module includes control logic, an input buffer, a rake despreader module, and an output buffer. The rake despreader module is operable to despread the baseband RX signal samples in a time divided fashion to produce channel symbols including pilot channel symbols and physical channel symbols.

Rake receiver architecture within a WCDMA terminal

Certain aspects of a method and system for delay matching in a rake receiver for WCDMA closed loop modes are disclosed. Aspects of one method may include selecting a set of channel estimates from a plurality of channel estimates generated for a delay matched branch and/or a non-delay matched branch in a rake receiver. A plurality of weight factors may be generated based on the selected set of channel estimates. In the delay matched branch of the rake receiver, the application of the generated plurality of weight factors may be delayed by a particular time period. A delay associated with a control channel and/or a data channel may be compensated based on the delayed application of the generated plurality of weight factors.

Method and system for delay matching in a rake receiver for WCDMA closed loop modes

Aspects of a method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction are presented. Aspects of the system may include one or more circuits that enable adjustment of a current demodulation frequency for receiving at least one subsequent symbol based on a computed weighted sum of a plurality of computed frequency error values. Each of the plurality of computed frequency error values may be derived from a current symbol, a corresponding previous symbol, and/or a previous frequency error value. The current symbol may include a current received symbol segment and one or more previously received symbol segments.

Method and system for a sliding window phase estimator for wideband code division multiple access (WCDMA) automatic frequency correction

A Radio Frequency (RF) receiver includes a RF front end and a baseband processing module coupled to the RF front end that is operable to receive a time domain signal that includes desired signal and interfering signal time domain training symbols and time domain data symbols. The baseband processing module includes a channel estimator operable to process the desired signal and interfering signal time domain training symbols to produce a respective time domain channel estimates, a Fast Fourier Transformer operable to convert the time domain channel estimates to the frequency domain to produce frequency domain channel estimates, a weight calculator operable to produce frequency domain equalizer coefficients based upon the frequency domain channel estimates, an Inverse Fast Fourier Transformer operable to convert the frequency domain equalizer coefficients to the time domain to produce time domain equalizer coefficients, and an equalizer operable to equalize the time domain data symbols using the time domain equalizer coefficients.

Frequency domain equalizer with one dominant interference cancellation for dual antenna radio

Method and system for sliding window phase estimator for WCDMA automatic frequency correction

Aspects of a method and system for a flexible automatic frequency control (AFC) design supporting transmit diversity are presented. Aspects of the system may include one or more circuits that enable computation of at least one frequency error value based on one or more previous computed frequency error values, current received symbols, and/or corresponding previously received symbols. A weighted sum may be computed from a plurality of computed frequency error values. A current demodulation frequency may be adjusted based on the computed weighted sum. The adjusted demodulation frequency may be utilized for receiving one or more subsequent symbols.

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Manalapan, NJ, United States of America

Joseph Boccuzzi