Title :
A Modular Transmultiplexer System Using Custom LSI Devices
Author :
Rossiter, Timothy J M ; Chitsaz, Sirus ; Gingell, M. ; Humphrey, Leslie D.
Author_Institution :
Standard Telecomm. Labs., Ltd., Harlow, Essex, England
fDate :
7/1/1982 12:00:00 AM
Abstract :
The design and operation of a 24- or 60-channel transmultiplexer based on a 12-channel signal processing module (or kernel) is described. The signal processing algorithm employs complex signal processing, and allows very low crosstalk and noise figures to be achieved without excessive group delay. The processing algorithm and the custom LSI devices used in its implementation were developed together to produce a low cost and low power implementation. Its performance amply meets the requirements of CCITT and North American specifications. Operation of the attendant subsystem, such as telephony signaling converters, is also described.
Keywords :
multiplexing equipment; transmultiplexing; 12-channel signal processing module; 24-channel transmultiplexer; 60-channel transmultiplexer; analog group filtering equipment; channel passband; complex signal processing; custom LSI devices; design; group delay; kernel; line interface; low crosstalk; low power; modular transmultiplexer system; noise figures; operation; polyphase filter; processing register; programmable multiplier; sample rate increase; signal processing algorithm; signaling conversion system; telephony signaling converters; time-varying filter; Algorithm design and analysis; Assembly systems; Filters; Kernel; Large scale integration; Partitioning algorithms; Passband; Signal design; Signal processing algorithms; Time division multiplexing;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1982.1095611
