Title :
Implementation of 72 point DST-IV for 60 channel TDM-FDM transmultiplexer
Author :
Li-Feng, Wang ; Wen-bo, Wang ; Zhong-De, Wang ; Wang, De-Jung
Author_Institution :
Beijing Univ. of Posts & Telecommun., China
Abstract :
The implementation of 72 point DST-IV (discrete sine transform L type four) is presented in this paper. This design is used for the 60 channel transmultiplexer (TMUX) which implements the conversion between time division multiplex (TDM) signals and frequency division multiplex (FDM) signals. Based on a newly developed fast algorithm, two cascaded printed circuit boards are designed. They are composed of general high speed integrated circuits, with structures suitable for pipeline and parallel computation. A ROM direct control mode is adopted. Combined with the use of multiplexing techniques, the above measures promise the real-time implementation of 72-point DST-IV equipment with 125 μs time duration at 9.216 MHz clock rate
Keywords :
digital communication systems; frequency division multiplexing; multiplexing equipment; parallel processing; pipeline processing; real-time systems; telecommunications computing; time division multiplexing; transmultiplexing; 125 mus; 60 channel; 72 point DST-IV; 9.216 MHz; ROM direct control mode; TDM-FDM transmultiplexer; cascaded PCBs; frequency division multiplex; high speed integrated circuits; parallel computation; pipeline; printed circuit boards; time division multiplex; Algorithm design and analysis; Concurrent computing; Discrete transforms; Frequency division multiplexing; High speed integrated circuits; Pipelines; Printed circuits; Read only memory; Signal design; Time division multiplexing;
Conference_Titel :
Circuits and Systems, 1991. Conference Proceedings, China., 1991 International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/CICCAS.1991.184536
