Techniques for linearizing phase independently of amplitude in a communications system

摘要

The present disclosure, for example, relates to one or more techniques for linearizing a signal in a communications system. An input signal may be obtained at a beginning of a signal path of a radio frequency (RF) communication device. The RF communication device may estimate subsequent distortion of the input signal due to the signal path. The estimated distortion may include estimated phase distortion and estimated amplitude distortion of the input signal. The RF communication device may adjust phase and amplitude within the signal path to compensate for the estimated phase distortion and the estimated amplitude distortion to produce an adjusted signal. The phase within the signal path of the input signal may be adjusted separately from the amplitude within the signal path of the input signal. The RF communication device may generate a linearized signal at an end of the signal path based at least in part on the adjusted signal.

主权项

1. A method comprising:
estimating distortion of a communication signal due to a signal path of a radio frequency (RF) communication device, the estimated distortion comprising estimated phase distortion and estimated amplitude distortion of the communication signal; adjusting an amplitude of the communication signal to compensate for the estimated amplitude distortion by modifying the communication signal with an amplitude modification circuit of the RF communication device; and adjusting a phase of the communication signal by modifying a phase of a local oscillator (LO) signal in an LO chain of the RF communication device based on the estimated phase distortion and applying the modified LO signal to the communication signal.