Comtech EF Data MCED-100 - Manual (Page 19)

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Chapter 1. INTRODUCTION
1.1 Overview
Figure 1-1. MCED-100 MetaCarrier Embedding Device
Comtech EF Data’s MCED‐100 MetaCarrier® Embedding Device (Figure 1‐1) is a patent pending
carrier identification (CID) product that uses spread spectrum technology to embed a unique
carrier identification sequence for a transmission carrier.
The MCED‐100 is combined with the MCDD‐100 MetaCarrier® Detection Device to provide a
complete MetaCarrier embedding and decoding product. In a typical network, there can be as
many MCED‐100s as there are modulating devices, and a smaller number of MCDD‐100s to
verify the presence of the MetaCarrier on each carrier. In an interference situation, the
MCDD‐100 may be used to decode the MetaCarrier of an interfering carrier that may not be part
of one’s own transmission network, as long as the interfering carrier has a MetaCarrier
embedded.
The MCED‐100 is unique in that it operates in both non‐interfered and interfered conditions. By
using the MetaCarrier concept, a low‐speed data sequence containing information about the
transmission carrier is spread using Direct Sequence Spread Spectrum (DSSS), and then
combined with the transmission “desired” carrier to produce a composite carrier with an
embedded CID.
The MCED‐100 provides inline embedding of the MetaCarrier for any modulator with an L‐Band
(950 MHz to 2150 MHz) or IF (50 MHz to 180 MHz) output. Common modulation types and
symbol rates are supported regardless of FEC (forward error correction) type.
• Sect. 1.3 MCED‐100 Features
• Sect. 1.4 MCED‐100 Specifications