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US 2008/0187076 A1Published application
Multi-mode receiver with adaptive mode selection
AssigneeResearch In Motion Limited
InventorsHuan Wu, Sean Simmons
Life of this patent
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Abstract
Receivers and methods are provided that include multiple modes of processing signals from multiple antennas. These include legacy, SAIC (single antenna interference cancellation) and MSRD. Various methods are provided for selecting an appropriate receiver processing function. These include looking at correlation and gain imbalance between antennas, looking at the processing gain resulting from one or more of the receiver processing functions, and looking at the equalization quality of at least two receiver processing functions.
Claims21
A receiver comprising:
- two antennas;
- a plurality of receiver processing functions for processing one or more signals received over the two antennas or combinations thereof;
- and
- at least one of:
- a) a branch power detector operable to determine a power of each signal;
- and
- b) a correlation detector operable to determine a correlation between signals received on the two antennas;
- wherein the receiver is operable to select a selected receiver processing function by taking into account an imbalance in the powers of the signals and/or by taking into account the correlation.
5 more elements
A method comprising:
- receiving a respective signal on each of two antennas;
- determining a power of each signal;
- determining a correlation between the signals;
- selecting a selected receiver processing function of a plurality of receiver processing functions by taking into account an imbalance in the powers of the signals and/or by taking into account the correlation;
- and
- producing an output using the selected receiver processing function.
3 more elements
A method comprising:
- receiving a respective signal on each of a plurality of antennas;
- selecting a selected receiver processing function from a plurality of receiver processing function as a function of any one or a combination of:
- a) correlation and gain imbalance between antennas;
- b) the processing gain resulting from one or more of the receiver processing functions;
- c) the equalization quality of equalized outputs of at least two receiver processing functions.
2 more elements
Dependencies are inferred from the claim text.