Text preview for : 5991-4301EN Quickly Validate Designs for DOCSIS 3.1 Compliance - Application Brief c20140805 [5].pdf part of
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Keysight Technologies
Quickly Validate Designs
for DOCSIS 3.1 Compliance
Application Brief
Accelerate research
and development and
design verification
test of DOCSIS 3.1
designs with a cost-
effective, standards-
based measurement
solution, that provides
high speed, wide
bandwidth, deep
memory and flexibility.
02 | Keysight | Quickly Validate Designs for DOCSIS 3.1 Compliance - Application Brief
Abstract
The latest version, DOCSIS 3.1, of the Data Over Cable Service
Interface Specification (DOCSIS) standard, has now been officially
released. Designing DOCSIS 3.1-based transmitters, receivers
and components, and verifying their performance against the new
standard requires stringent testing - a process made more com-
plex by the standard's adoption of new technologies and the need
for backward compatibility with previous DOCSIS versions.
This document describes the Keysight Technologies, Inc. portfolio
of DOCSIS 3.1 test solutions - hardware and software to generate
and analyze signals up to 192 MHz bandwidth, as shown in
Figure 1. These solutions can be used to test transmitters, re-
ceivers and components against the new requirements set forth
in the DOCSIS 3.1 specification.
Figure 1. Analysis of statistically correct 4096 QAM DOCSIS 3.1 signal using
89600 VSA software, demonstrating MER > 55 dB.
Introduction
Over the years, the DOCSIS standard evolved to meet the needs
of cable operators and their subscribers. Emerging applications
like HDTV video streaming around the home and in-room gam-
ing, is driving demand for multi-gigabit data rates. The need for
increased bandwidth led to the latest standard revision -
DOCSIS 3.1.
DOCSIS 3.1 provides a way for cable operators to increase capac-
ity and speed, with up to 50 percent more data throughput over
the same spectrum than DOCSIS 3.0, and the ability to deliver
2.5 Gbps in the upstream and 10 Gbps in the downstream on an
existing hybrid fiber-coaxial (HFC) network. Its efficient spectrum
use enables a significant decrease in the cost per bit for data
delivery. This provides cable operators a competitive advantage
over satellite and wireless providers in the hotly contested battle
for today's bandwidth-hungry broadband data subscribers.
03 | Keysight | Quickly Validate Designs for DOCSIS 3.1 Compliance - Application Brief
Key issues faced by R&D engineers Signal Generation (192 MHz bandwidth)