Symbol-level equalization using multiple spreading factors
AssigneeBroadcom Corporation
InventorFu-Hsuan Chiu
Life of this patent
Estimating the term…
Abstract
Techniques are described herein that perform symbol-level equalization using multiple spreading factors. The techniques may allow for symbol-level equalization to be performed between a serving cell and a non-serving cell(s) for WCDMA and HSDPA protocols, for example. A serving cell operates using a first spreading factor, and a non-serving cell(s) operates using a second, different spreading factor. Data communications received from the serving cell and the non-serving cell(s) may be aligned using extended channel representation(s) of the non-serving cell(s) and/or scrambling code offset(s). The aligned communications may be equalized using symbol-level equalization to obtain a joint linear minimum mean square error between the serving cell and the non-serving cell(s).
Claims20
A method, comprising:
- receiving first data communications from a serving cell that operates using a first spreading factor;
- receiving second data communications from at least one non-serving cell that operates using a second spreading factor that is different from the first spreading factor;
- and
- performing symbol-level equalization on a first plurality of data communications that includes the first data communications and the second data communications.
A mobile communication device, comprising:
- a receiver block configured to receive first data communications from a serving cell that operates using a first spreading factor and second data communications from at least one non-serving cell that operates using a second spreading factor that is different from the first spreading factor;
- an adjustment block configured to align the first data communications and the second data communications with respect to time to provide aligned first and second data communications;
- and
- an equalizer block configured to perform symbol-level equalization on the aligned first and second data communications.
A computer-readable storage medium having computer program instructions recorded thereon that, when executed, enable a processor-based system to perform a method, the method comprising:
- receiving first data communications from a serving cell that operates using a first spreading factor;
- receiving second data communications from at least one non-serving cell that operates using a second spreading factor that is different from the first spreading factor;
- and
- performing symbol-level equalization on a plurality of data communications that includes the first data communications and the second data communications.
Dependencies are inferred from the claim text.