Improve Plant Performance with Laser Clipping Suppression (2000)

By Robert L. Howald and Timothy J. Brophy, Motorola Broadband Communications Sector

Forward path digital loading has become common in HFC signal multiplexes over the past several years. The added bandwidth on HFC systems requires not just improved frequency response from the equipment in the distribution chain, but it also requires hardware with better dynamic range. As the forward path signal load increases with heavy digital loading, the total output power that must be achieved without degrading distortion is increased. Depending on plant layout, the total power could also be shared by backing down the analog load as a tradeoff with the increasing digital load’s effects. However, with slightly lower analog levels, CNR would degrade unless a lower noise floor exists. Thus, ideally, devices with improved dynamic range yield the most flexibility.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Improve Plant Performance with Laser Clipping Suppression
By Robert L. Howald and Timothy J. Brophy, Motorola Broadband Communications Sector
2000
The Grown-up Potential Of A Teenage Phy
By Dr. Robert Howald, Robert Thompson, Dr. Amarildo Vieira, Motorola Mobility
2012
Noise Power Ratio the Analytical Way
By Robert L. Howald, Michael Aviles Motorola Broadband Communications Sector
2000
Customized Broadband – Analysis Techniques For Blended Multiplexes
By Dr. Robert L. Howald, Erik Metz, Rob Thompson , Motorola Broadband Communications Sector
2002
Bringing Together Headend Consolidation and High-Speed Data Traffic in HFC Architecture Design
By Dr. Timothy Brophy, Dr. Robert Howald, Curt Smith, General Instrument Corporation, Transmission Network Systems
1999
The Exact BER Performance Of 256-QAM With RF Carrier Phase Noise
By Robert L. Howald, Ph.D., Director, Transmission Networks Systems Engineering, Motorola Broadband Communications Sector
2001
Distortion Beat Characterization and the Impact on QAM BER Performance
By D. Stoneback, R. Howald and T. Brophy, GE and O. Sniezko , AT&T Broadband & Internet Services
1999
Migration To Full Digital Channel Loading On A Cable System
By Marc Ryba, Motorola Broadband Communications Sector
2001
New Megabits, Same Megahertz: Plant Evolution Dividends
By Robert L. Howald, Ph.D., Amarildo Vieira, Ph.D., Michael Aviles, Motorola Home & Networks Mobility
2009
Breathing New Lifespan into HFC: Tools, Techniques, and Optimizations
By Dr. Robert L. Howald, ARRIS
2013
More Results >>