Specifications

MSU has constructed a lab test bed to support bench acceptance and performance testing of the
AN50 radio equipment. The lab test bed is located in the AAC Tech Ranch facility consists of
the following components major components.
• IP Traffic generators. MSU has procured and installed Omnicor IP traffic generator
measurement software capable of generating and measuring up to sixteen simultaneous
traffic streams consisting of either UDP or TCP packets. The tools measure round trip
delay, lost packets, bit error rate and throughput. The characteristics (e.g., packet size,
priority, inter-packet delay time, packets per second, etc.) of the traffic source can be
varied on a per connection basis. The software collects, stores, analyzes and graphs the
data. The Omnicor software has been installed and tested on the AAC laptop computer
and on several MSU computers that will be used in the test bed. Figure 2 is a diagram of
the IP traffic measurement environment.
Traffic
Generation on
AAC Laptop
Packet Sorter on
Linux Router
AN-50 Ethernet Interface
SS 1
SS 2
SS 3
BS 1
RF Connection
Traffic Absorber
and Analyzer on
Laptop
Key
Ethernet
RF Cable
Figure 2. IP traffic generation and measurement system
• RF Test equipment. MSU has procured and assembled an RF test environment to emulate
P2P and PMP configurations of the AN50 radio equipment. These components consist of
high-quality RF coax cables (low insertion loss and leakage at the 5.8GHz operating
frequency), fixed and variable RF attenuators (calibrated at 5.8GHz using the MSU
Electrical and Computer Engineering (ECE) department RF network analyzer) and RF
couplers and power splitters (1x3 and 1x2). We have also acquired, under loan from
ECE, a calibrated RF noise source that can be used for noise injection for signal-to-noise
ratio (SNR) performance testing. The equipment supports several configurations:
o Single P2P connection (one BS and One SS), without or with noise injection
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