ADTRAN, Inc., (NASDAQ:ADTN) has unveiled Radio Frequency over Glass (RFoG) "MicroNodes" with built-in optical beat interference (OBI) mitigation. RFoG is a DOCSIS-friendly fiber to the home (FTTH) architecture cable multiple systems operators (MSOs) use either as an alternative to PON or as a stepping stone toward PON (see "MSOs want their FTTH and DOCSIS, too").
OBI occurs when simultaneous upstream transmissions from multiple cable modems interfere with each other, a condition that becomes more likely as subscriber densities increase. Some OBI-mitigation techniques require construction of centralized cabinets, which ADTRAN points out requires the availability of power and right-of-way. The company says its built-in mitigation technology obviates the need for construction of such cabinets and offers a distributed approach to OBI mitigation.
"By deploying our MicroNodes, ADTRAN cable MSO customers are afforded a more simplified approach to OBI mitigation and FTTH expansion, one that is compatible with both 1G and 10G EPON and transparent to the existing CATV assets like in-home set top boxes," said Hossam Salib, vice president of cable and wireless strategy at ADTRAN. "MSOs are not only looking for these critical RFoG advantages, but demand an OBI mitigation that avoids constructing centralized cabinets that delay time-to-market and require a large amount of up front capital."
"The need to support reliable voice and ultra-fast broadband is key to securing lucrative triple-play revenues for MSOs in a changing competitive landscape," said Erik Keith, principal analyst, GlobalData, via an ADTRAN press release. "As MSOs look to build out their fiber infrastructure to support rich video content, ADTRAN RFoG OBI solutions allow them to deliver the requisite customer experience while accelerating FTTH service by reliably reusing their existing RF infrastructure."
For related articles, visit the FTTx Topic Center.
For more information on FTTx systems and suppliers, visit the Lightwave Buyer's Guide.