Adaptive receiver for wireless communication device
AssigneeQUALCOMM Incorporated
InventorGary Ballantyne
Life of this patent
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Abstract
In general, the disclosure is directed to techniques for combining a high performance receiver and a low power receiver within a wireless communication device (WCD) to reduce power consumption. Upon receiving a signal from a base station, a controller within the WCD detects one or more channel conditions of a radio frequency (RF) environment between the base station and the WCD. The controller selects a high performance receiver to process the received signal when the RF environment is unfavorable and selects a low power receiver to process the received signal when the RF environment is favorable. In this manner, the WCD implements an adaptive receiver that adapts its receiver structure according to RF channel conditions.
Claims40
A method comprising:
- receiving a wireless signal;
- evaluating at least one channel condition associated with the wireless signal;
- and
- selecting one of a high performance receiver and a low power receiver to process the received signal based on the evaluation.
A wireless communication device (WCD) comprising:
- an antenna that receives a wireless signal;
- a high performance receiver coupled to the antenna;
- a low power receiver coupled to the antenna;
- and
- a controller that evaluates at least one channel condition associated with the wireless signal, and selects one of the high performance receiver and the low power receiver to process the received signal based on the evaluation.
A wireless communication device (WCD) comprising:
- an antenna that receives a wireless signal;
- a high performance zero intermediate frequency (ZIF) receiver coupled to the antenna;
- a low power low intermediate frequency (LIF) receiver coupled to the antenna;
- a RAKE demodulator have a first plurality of fingers coupled to an output of the high performance ZIF receiver and a second plurality of fingers coupled to an output of the low power LIF receiver;
- and
- a controller that evaluates at least one channel condition associated with the wireless signal, selects the low power LIF receiver to process the received signal when the channel condition is favorable, and selects the high performance ZIF receiver to process the received signal when the channel condition is unfavorable.
Dependencies are inferred from the claim text.