METHOD AND APPARATUS FOR PROVIDING AN ENHANCED ZERO-IF RECEIVER ARCHITECTURE FOR A WIRELESS COMMUNICATIONS SYSTEM

摘要

An approach includes injecting a plurality of equal amplitude tones across a frequency band. The approach also includes determining frequency response based on the injected tones, determining an imbalance parameter associated with a quadrature down-converter based on the determined frequency response; determining one or more parameters for wideband quadrature compensation based on the determined frequency response, and compensating an input signal based on the determined imbalance parameter and the determined one or more parameters for the wideband quadrature compensation.

主权项

1. A method comprising:
injecting a plurality of equal amplitude tones across a frequency band; determining one or more frequency responses based on the injected tones; determining an imbalance parameter associated with a quadrature down-converter based on the determined one or more frequency responses; determining one or more parameters for wideband quadrature imbalance compensation based on the determined one or more frequency response; down-converting an input RF signal by the quadrature down-converter; providing DC off-set compensation of the I and Q components of an intermediate signal, wherein the intermediate signal represents in-phase (I) and quadrature (Q) components of the quadrature down converter; and compensating the intermediate signal based on the determined one or more parameters for wideband quadrature compensation.