The Digital Unit Automated Parametric Test System (DSU-APTS) was designed to aid in the development and testing of tone receivers implemented in the DSU.
Design and performance of a 2:1 multiplexer and 1:2 demultiplexer IC up to 85.4 Gbit/s are presented.
AT&T's digital conferencing systems provide user control and call set-up by TOUCH-TONE dialing in response to voice announcements.
Abstract: We analyzed the introduction of DSP in optical access.
Based on recent experimental results for spatially multiplexed transmission, we analyze the impulse response matrix of few-mode fiber links that support the propagation of LP01 and LP11 modes over
Digital signal processing combined with coherent detection has played a central role in the recent capacity expansion of optical networks.
The possibility of doing filtering and other signal-processing operations by numerical means instead of by traditional analog means has been known and studied for 20 years or longer.
Adaptive differential pulse-code-modulation (ADPCM) encoding has been shown to be a simple and effective method for digitally encoding speech at bit rates in the range of approximately 24 to 48 kb/
A single-chip integrated circuit has been developed as a stand-alone part for digital signal processing.
Digital signal processing has become more and more important in telecommunications. As new products and services are offered, the amount of required signal processing continues to increase.
