User's Manual

3
Introduction
ACRS 1.0 is the first generation Adaptrum cognitive radio system covering spectrum bands from
400 MHz to 1 GHz. Although capable to operate in other spectrum bands below 1 GHz, Adaptrum ACRS
1.0 is specifically designed to operate in the UHF TV Band (470 MHz – 698 MHz), as TV Band Devices
compliant to the rules specified in CFR 47 Part 15 Subpart H. To be rules-compliant, ACRS 1.0 systems
must operate as Fixed TV Band Devices and must be professionally installed. ACRS 1.0 system
specifications are shown in the following table.
General Specifications
Technology TDD OFDMA
Network topology Point to Multi-Point
Frequency range 400 MHz – 1000 MHz
Channel bandwidth Flexible up to 10 MHz
Supporting 6, 7, 8 MHz TV channels
Aggregated data rate
1 Mbps – 13 Mbps
(per 6 MHz channel)
Uplink/downlink Ratio Any
MIMO Up to 4 antennas
Transmit power < 1 W conducted
Channel bandwidth efficiency ~92 percent
Adjacent channel emission
< -57 dBc
Typical receiver sensitivity
(6 MHz Channel)
Signal level
SNR
Data Throughput
-98 dBm 3.5 dB 2.7 Mbps (QPSK 1/2)
-90 dBm
11.5 dB
7.1 Mbps (16 QAM 2/3)
-81 dBm 20.5 dB 12 Mbps (64 QAM 3/4)
Interface Specifications
Antenna connector Type N female
Data/control interface 10/100 Ethernet
Electrical and Mechanical Specifications
Power supply 110 V AC or 220 V AC
Physical dimensions 17 inches x 12 inches x 4.5 inches
Weight 14 LB
Adaptrum ACRS 1.0 system specifications.
ACRS 1.0 radio unit is enclosed in a 2U size box whose front panel and back panel are shown in
the following pictures. Both the base station and the client station use the same radio unit.