Redline Communications AN-50e Specifications Page 1

Design and Analysis of a Wireless Telemetry System Utilizing IEEE 802.16 by Terry Moltzan Advisor: Dr. Richard Wolff Montana State University

3.Test Bed 3.1 Test Bed Objectives: A test bed for evaluating a high-speed radio link is required. This test bed should be able to simulate a real

quality of shielding was required so that there would be minimum leakage of RF power. This insures that the energy is flowing through the test bed as

Fig. 3.1 General Test bed Architecture. The physical portion of the test bed, showing the terminals and the basic interconnects.

3.3 Hardware Selection: The signal attenuation block shown in the above section was implemented by using fixed value attenuators, as well as a step

AN-50 terminal and the T-58 transceiver. The radios, transceivers and some of the attenuators are shown in Fig. 3.3 Advanced Acoustic Concepts suppl

A Visual Basic (VB) script was written to do some analysis on several different data files at once as well. This allows for complete test set data

From the IP Generator – Parameters tab the protocol as well as the destination IP address and port can be specified. These values need to match with

An important part of the test bed is the web interface for the AN-50. The system status screen is shown below in Figure 3.7. This screen shows the

sweep, the higher the received power level is. It was observed that small aiming differences did not result in a significant change in signal quality

------------------------------------------------------------ Server listening on UDP port 5001 Receiving 1470 byte datagrams UDP buffer s

TABLE OF CONTENTS 1. Introduction 3 1.1 Motivation 3 2. System Selection 3 2.1 IEEE 802.16 S

generation was set to produce random packet contents for a duration of 1,000,000 packets. The average result over the test interval was extracted by

Cobleigh Hall, on the MSU campus and a remote site located twenty miles north on Rocky Mountain Road. The Cobleigh Hall antenna was located on the roo

Fig. 4.2 Fresnal Zone Clearance Fig. 4.3 The Remote Site for the Long Range Test. In this photo the generator is visible

Fig. 4.4 View From the Cobleigh Hall Site Towards the Remote Site. 5. Test Results A series of tests have been done on the Redline AN-50

overhead becomes less important as the payload size increases. The packet size was increased to a maximum of 1480 bytes, the size of the Ethernet fra

the testing software. This is where it first becomes apparent that Iperf is better suited to run tests at high speeds. As the signal level is lowere

5.3 Additive Noise Effects: The effect of injecting various amounts of noise into the signal was investigated. This was done at several different lev

probably due to the use of OFDM, which allows for sub-channels to be utilized, some of which are not sharing any bandwidth with the interferers.

Throughput Vs Interfereing Power (Signal at 5.765 GHz)RSSI = -64dbm051015202530354045-70 -60 -50 -40 -30 -20 -10 0Recieved Interfering Power (dbm) at

environment. The alignment of the antennas was done by first using a visual alignment and then fine-tuning by using the built in buzzer in the transc

1. Introduction 1.1 Motivation: Advanced Acoustic Concepts (AAC) has several projects that require a communications link between remote sites. The

The effect of using Redline’s proprietary encryption was investigated as well. The results show little difference if it is on or off. For all of th

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Appendix 1 This macro takes the raw IP Traffic data files that are saved as text files and stored in the C:\SampleData file. Sub Macro2() Dim

Data = CDbl(temp3(1)) Else Data = 0 End If If Data = 0 And Ender = 0

Appendix 2 Iperf commands and options Command line option Environment variable option Description Client and Server options -f, --format [bkmaBKMA]

Default is 5001, the same as ttcp. -u, --udp $IPERF_UDPUse UDP rather than TCP. See also the -b option. -w, --window #[KM]$TCP_WINDOW_SIZESets the soc

-o (only for Windows, from v1.2 or higher) . Redirect output to given file. -c, --client host$IPERF_CLIENTIf Iperf is in server mode, then specifyin

throughput 0x08 IPTOS_RELIABILITY maximize reliability 0x04 IPTOS_LOWCOST minimize cost 0x02 -T, --ttl # $IPERF_TTLThe

discussed. It became clear that the emerging IEEE 802.16 standard was the standard that best met the criteria of the task. The top contending syst

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Appendix 5 Radio System Test Plan AAC Wireless Telemetry Project Task Order 1 1. Introduction and background This test plan document outlines the pr

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 th

o Multiple P2P connections with cross talk and noise injection o PMP connection, one BS and three SSs, without or with noise injection. These confi

Figure 4, in conjunction with the IP layer traffic data to assess system performance. Figure 4. AN50 Radio System web interface diagnostics All da

in Figure 5. These tests will include power consumption, transmit output power, RF frequencies and the various control functions. We will not test fo

We will also test the web-based administrative interface to assure that the test points and control functions and system configuration data are all fu

2.1 IEEE 802.16 Standard: The IEEE 802.16 standard is designed as the air interface for wireless metropolitan area networks (MANs). A wireless MAN pr

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Figure 6. AN50 Web-based administrative and monitoring features 5. Performance tests A. Throughput measurements. We will conduct a series of lab b

• PMP) Same as above, but with one channel being kept at a constant power as a reference and varying the loss on the second channel. C. Throughput v

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sacrificing performance. 99.999 percent link availability is planned into the standard. By making these adjustments the throughput on the link is al

Figure 2.1 Throughput for various modulation schemes. The over the air throughput is much higher than the Ethernet rate since it also i

The AN-50 functions as a wireless Ethernet bridge. For all of the testing the IP addresses of the two radios were set to 192.168.25.2 and 192.168.25.

2.3 Link Budget Consideration: A link budget for the Redline radio was considered for the distance of 20 miles. The system was considered with 28dBi