Executive Summary
The purpose of this document is to identify common characteristics of Radio Frequency hardline amplifiers to be used in Full Duplex DOCSIS (FDX) broadband hybrid fiber coax (HFC) networks.
These requirements are not intended to limit vendor innovation; vendors are still left with many opportunities for differentiation. These requirements recognize the need to simplify operations by creating standards for key operationally beneficial parameters.
Scope
This document recommends mechanical, environmental, and electrical standards for broadband radio frequency (RF) amplifiers that support DOCSIS® 4.0 FDX capabilities (echo cancellation), with synchronous downstream and upstream operation at frequencies from 108 to 684 MHz, including all sub-band options as defined in the DOCSIS 4.0 FDX specifications with D3.0/D3.1 upstream operation at frequencies of 5 to 85 MHz and D3.0/D3.1 downstream operation from 684-1218 MHz.
Products covered by this document include the high gain single and multiport amplifiers required to support upgrades at legacy amplifier locations. The devices are intended for an outdoor rated environment.
Benefits
Broadband RF amplifiers are an integral part of an HFC network and enable signals to be carried greater distances along coax with minimal degradation in signal integrity. Identifying key characteristics of the amplifiers required to support DOCSIS 4.0 FDX will assist manufacturers by defining their requirements, which will benefit the industry by increasing the capacity and extending the useful life of the HFC network.
Intended Audience
Cable, fiber and telecommunications designers, engineers, operators, and equipment vendors.