System and method for estimating channel condition based on filtered pilot energy signal

摘要

A receiver may estimate a channel condition based on a difference between a pilot energy signal and a filtered pilot energy signal. The receiver may further switch to a stereophonic mode when both the difference and an energy level of the pilot energy signal satisfy a predetermined requirement of the receiver, and switch to a monophonic mode when either the difference or the energy level of the pilot energy signal fail to satisfy the predetermined requirement of the receiver.

主权项

1. A receiver comprising:
an extractor configured to extract a pilot energy signal from an input signal; and a detector configured to cause the receiver to output a monophonic signal based on a residual signal indicative of a difference between the pilot energy signal and a filtered pilot energy signal.