User Manual
© Vyyo 2000 All rights reserved. v.3. LMDS Lite, and DOCSIS+ are all registered
trademarks of Vyyo. All other trademarks and brand names are the property of their respective owners.
V3000 Wireless Hub
WIRELESS HUB RF CHARACTERISTICS
IF Frequency Range 41 to 47 MHz 5 to 65 MHz
RF Frequency Range Depends on ancillary equipment - MMDS, LMDS, 3.5 GHZ, 10.5 GHz, WCS, UHF and unlicensed
RF Channel Bandwidth 3 MHz, 3.5 MHz & 6 MHz 400, 800 & 1,600 kHz
Connector Impedance 75 ohms 75 ohms
Spurious Emissions Up to -55 dBc at channel edge and up to
-60 dBc at 3 MHz from channel edge
Modulation Format QPSK, 16 & 64 QAM QPSK & 16 QAM
Data Rate per channel (raw) 10.6 to 31.8 Mbps 640 Kbps - 2.56 Mbps & 1.28 Mbps - 5.12 Mbps
Data Rate per chassis Channels x data rate per channel up to 100 Mbps
RF Signal Level 20 to
+
40 dBmV -15 to
+
35 dBmV
Frequency Compensation Locked to 10 MHz reference ± 100 kHz
Vyyo is a leading global provider of broadband wireless access systems for MMDS, LMDS, 3.5 GHz,
10.5 GHz, WCS, UHF and unlicensed bands used by telecommunications operators to deliver
wireless, high-speed data connections to business and residential subscribers. Vyyo’s flexible point-
to-multipoint systems are based on the Internet Protocol (IP) used for data and voice transport over
the Internet, providing cost-effective and scalable solutions to support broadband wireless services.
The V3000 Wireless Hub (WMTS) serves as a data communications bridge between Vyyo’s
V251 Wireless Modems installed at the subscriber’s home or office and network backbone
connections (routers) located at a central office or base station. The V3000 is a carrier class
wireless system that features hot-swap modification or system module replacement by the
operator while maintaining continuous operation. When used in combination with the V251
Wireless Modems, the wireless hub enables radio frequency (RF) performance in any of the
currently licensed or unlicensed point-to-multipoint frequency bands. This is accomplished, in part,
by permitting the system operator to establish upstream sub-channels and downstream channels
with various combinations of modulation techniques.
The wireless hub chassis supports multiple RF modules. Each module may be either an
Upstream Demodulator (receiver) module or a Downstream Modulator (transmitter) module for
the V251 series modems. The downstream modules are available in single channel versions. The
upstream modules are available in single or hex (6) channel versions. This gives the system
engineer the flexibility to configure a system for each deployment scenario using multiple channels
or sub-channels, multiple sectors or a combination.
DOCSIS Standard Adapted for Wireless Systems
Vyyo’s systems employ an enhanced version of DOCSIS
which was adapted for wireless
environments from the cable industry’s DOCSIS standard. The specification is excellent in network
and data link protocols, QoS, convergence, synchronization, registration, encryption, privacy, etc.
However, because DOCSIS was designed for cable TV systems, it is inadequate to address some
unique characteristics of the wireless environment, e.g., frequency offset and drift, dynamic range,
spurious emissions, multipath and fading immunity. Vyyo’s wireless enhancements allow robust
operation over the full spectrum, including licensed or unlicensed. A few of the specific wireless
enhancements that are incorporated in the V251 Wireless Modem are:
• Three types of downstream modulation (QPSK, 16QAM, and 64QAM)
• Two types of upstream modulation (QPSK and 16QAM)
• Multiple symbol rate options upstream and downstream
• Frequency compensation for offset, drift over temperature and aging
• Low spurious emissions and harmonics
• Extended dynamic range
• Robust power control
These enhancements allow the V251 Wireless Modem to meet the requirements of the FCC and
to provide robust performance in the RF path.
ENABLING HIGH-SPEED WIRELESS INTERNET ACCESS
Network Protocols IP, ICMP & ARP
Transports Protocols TCP & UDP
Application Protocols SNMP, TFTP & DHCP
Network Management DOCSIS related Internet drafts, RFCs and MIBs (IETF IPCDN Working Group) with private extensions
Security Baseline Privacy with key negotiation and transfer
Encryption DES 56 Bit Encryption and Decryption
Forward Error Correction Reed Solomon/Trellis Decoder, Reed Solomon Encoder, ITU-T J.83 Annex B/C
Quality of Service Per DOCSIS 1.1 available through future software upgrades
User Quantity Consistent with data rates
Network Connector RJ-45 100baseT Female
IF Interface Type F Female Connector
Power 110 - 230 VAC or -48 VDC 350 Watt maximum for P2601, request applicable power plug type with order
Dimensions Rack mounting 19" x 15" x 15"; 44 x 38 x 38 cm
LED Indicators 1 alpha-numeric plus 7 LEDs per module
RF Slots 6
Operating Temperature 32 - 104°F / 0 to 40° C
Storage Temperature -40 to 257° F / -40 to 125° C
Storage Temperature Humidity 10 to 90% non-condensing
, ,
: .. : .. ..
All specifications are subject to change.
•
Carrier class wireless hub
•
Redundancy
•
Hot swapping
•
Point-to-multipoint broadband
wireless Internet access
•
Virtual Private Network (VPN)
•
Upgradeable and expandable —
one chassis can support multiple channels
•
Powerful, easy-to-configure network management system
•
MMDS, LMDS, 3.5 GHz, 10.5 GHz, WCS, UHF & unlicensed bands