Title :
New Realization of DFT Applied to CCITT No. 5 Telephone Signaling System
Author :
Ikeda, Yoshikazu ; Norigoe, Masamitsu
Author_Institution :
Kokusai Denshin Denwa Co., Ltd. Meguro-ku, Tokyo, Japan
fDate :
3/1/1984 12:00:00 AM
Abstract :
This paper describes a digital multifrequency signal receiver based on the discrete Fourier transform (DFT) principle. The new lookup table implementation for fast multiplication of an input PCM sample and a kernel sample leads to simple hardware for the operation of 128 time-multiplexed channels of the CCIT No. 5 line signal receiver. Overlap operation and guard logics are also employed to meet the signaling system requirements.
Keywords :
DFT; Discrete Fourier transforms (DFT´s); Signal detection; Telephone systems; Circuits; Communication system signaling; Discrete Fourier transforms; Hardware; Phase change materials; Registers; Signal design; Signal detection; Signal processing; Telephony;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
DOI :
10.1109/JSAC.1984.1146056
