Methods, systems, and computer readable media for testing long term evolution (LTE) air interface device using per-user equipment (per-UE) channel noise

A system for testing an air interface device using per user equipment (UE) channel noise, the system comprising:

• a network equipment test device, including:
• an uplink signal generator for generating per-UE time domain uplink signals to be transmitted from plural simulated user equipment (UEs) to an air interface device under test;
• a plurality of Fourier transformation units for performing Fourier transformation of the per-UE time domain uplink signals to form per-UE frequency domain u link signals;
• a plurality of per-UE channel noise generators for generating and individually applying per-UE channel noise to the per-UE frequency domain signals, wherein applying per-UE channel noise includes applying different channel noise to at least some of the per-UE frequency domain uplink signals;
• a subcarrier mapper for performing subcarrier mapping of per-UE frequency domain uplink signals to form an entire bandwidth frequency domain uplink signal with per-UE channel noise;
• an inverse Fourier transformation unit for performing inverse Fourier transformation of the entire bandwidth frequency domain uplink signal to form an entire bandwidth time domain uplink signal with per-UE channel noise;
• and
• a network interface for transmitting the entire bandwidth time domain uplink signal with the per-UE channel noise in an uplink direction to the air interface device under test.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by the processor of a computer control the computer to perform steps comprising:

• at a network equipment test device:
• generating per-user equipment (per-UE) time domain uplink signals to be transmitted from plural simulated UEs to an air interface device under test;
• performing Fourier transformation of the per-UE time domain uplink signals to form per-UE frequency domain uplink signals;
• generating and individually applying per-UE channel noise to the per-UE frequency domain signals, wherein applying per-UE channel noise includes applying different channel noise to at least some of the per-UE frequency domain uplink signals;
• performing subcarrier mapping per-UE frequency domain uplink signals to form an entire bandwidth frequency domain uplink signal with per-UE channel noise;
• performing inverse Fourier transformation of the entire bandwidth frequency domain uplink signal to form an entire bandwidth time domain uplink signal with per-UE channel noise;
• and
• transmitting the entire bandwidth time domain uplink signal with the per-UE channel noise in an uplink direction to the air interface device under test.