User Manual

ADCP-XX-XXX • November 2000 • Section 2: WMTS Description
Page 2-22
 2000, ADC Telecommunications, Inc.
Table 2-4. Data Throughput - Upstream
UPSTREAM
NOMINAL THROUGHPUT PER SUB-CHANNEL
BITRATE
(NOMINAL)
CHANNEL
WIDTH
SYMBOL RATE
QPSK
(2 BITS PER
SYMBOL)
400 KHz 320 Ksym/sec 640 Kb/s
800 KHz 640 Ksym/sec 1280 Kb/s
1600 KHz 1280 Ksym/sec 2560 Kb/s
Table 2-5. Data Throughput - Downstream
DOWNSTREAM
NOMINAL THROUGHPUT PER CHANNEL
1
CHANNEL
WIDTH
MODULATION
TYPE
SYMBOL RATE BIT RATE
6 MHz QPSK 5.304 Msym/sec. 10.608 Mb/s
6 MHz 16 QAM 5.304 Msym/sec. 21.216 Mb/s
6 MHz 64 QAM 5.0565 Msym/sec. 30.3414 Mb/s
5.4 Provisioning
Parameters such as modem serial number, frequencies of operation, and power levels are
directly associated with the WMU. It is important to keep databases with this WMU
information current for both technical and administrative purposes. A parameter like the serial
number is not field-changeable and needs to be entered only once. Parameters, such as
frequencies of operation and power levels, are manually set at the time of installation. The
DOCSIS-based WMTS system automatically negotiates these parameters based on certain
conditions. There are parameters associated with the user, such as name, street address, phone
number, account number and type of CPE hardware. All these parameters are accounted for
during provisioning.