Universal Adaptive Echo Cancellation Engine

Introduction

One of the major obstacles in today's broadcasting is the presence of echoes resulting from two processes:

• Main signal multi-path propagation;
• Energy leakage from the output of a repeater to its input, or so-called feedback interference.

Avateq Corp. presents a robust adaptive echo and feedback interference cancellation system/engine that can be integrated into client's transmitting system. Avateq's Adaptive Echo Canceller effectively detects and removes both echoes from the repeater’s input, providing a “clean” signal at the repeater’s output.

Functionality and features:

• High performance adaptive echo and feedback canceller with improved MER capabilities;
• Uses proprietary architecture for the main signal restoration;
• Channel equalization for the main signal recovering;
• Integrated adaptive non-linear and linear digital predistorter (DPD) with PAR reduction;
• Integrated signal envelope tracking capabilities for transistor drain control;
• Adjustable echo cancelling window position;
• Signal quality (MER, SNR) monitoring capabilities;
• Supports major broadcasting video and audio standards - DRM+, ISDBT, ATSC, DAB, CMMB, DVB-T/H, DVB-T2, etc.;
• Supports proprietary modulation schemes used in, for example, hybrid "satellite-terrestrial" digital broadcasting;
• Integrated monitoring receiver functionality;
• Can be used for signal propagation and environment analysis.

Target Applications and Industries:

• SFN complient on-channel repeater with extended functionality.

Ordering Information:

Avateq's Universal Adaptive Echo Cancellation and Feedback Interference System can be customized to client's requirements to be integrated into existing systems. Please, contact us for quotation.