Software configurable distributed antenna system and method for bandwidth compression and transport of signals in noncontiguous frequency blocks

摘要

A method for transporting communications signals includes receiving an analog IF signal at a first unit. The analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth. The analog IF signal is converted to a digitally sampled IF signal having the first carrier located in a first Nyquist zone, the second carrier located in a second Nyquist zone, an image of the first carrier located in a third Nyquist zone, and an image of the second carrier located in the third Nyquist zone. The image of the first carrier and the image of the second carrier is transmitted from the first unit to a second unit, where the image of the first carrier and the image of the second carrier is then converted to the analog IF signal.

主权项

1. A method for transporting communications signals, the method comprising:
receiving an analog IF signal at a first unit, wherein the analog IF signal includes a first carrier having a first frequency and a first bandwidth and a second carrier having a second frequency different from the first frequency and a second bandwidth; providing a sampling signal having a sampling frequency; converting the analog IF signal to a digitally sampled IF signal having:
the first carrier located in a second Nyquist zone;the second carrier located in a third Nyquist zone;an image of the first carrier located in a first Nyquist zone; andan image of the second carrier located in the first Nyquist zone; transmitting the image of the first carrier and the image of the second carrier from the first unit to a second unit; receiving the image of the first carrier and the image of the second carrier at the second unit; providing a second sampling signal have a second sampling frequency; and converting the image of the first carrier and the image of the second carrier to the analog IF signal.