Title :
Integrated Full-Digital U-Interface Circuit for ISDN Subscriber Loops
Author :
Széchényi, Kálmán ; Zapf, Franz ; Sallaerts, Danny
Author_Institution :
Standard Elektrik Lorenz AG (ITT), Stuttgart, West Germany
fDate :
11/1/1986 12:00:00 AM
Abstract :
Reasons for using the echo-cancellation (EC) technique for full-duplex two-wire transmission of ISDN signals are given. Analysis of the performances achievable with different codes, such as 3B/2T, MMS43, partial response class 4 (PR4), and diphase, justifies the final selection of MMS43. A full-digital integrated U-interface circuit with MMS43 code and with Barker codeword synchronization is described. First laboratory test results are presented.
Keywords :
Echo interference; Integrated services digital networks; Bit rate; Circuit testing; ISDN; Integrated circuit technology; Kalman filters; Laboratories; Subscriber loops; System performance; Time division multiplexing; Very large scale integration;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
DOI :
10.1109/JSAC.1986.1146463
