Title :
Fully digital ATDE´s and XPIC´s for a STM-1 cochannel radio system family
Author :
Lankl, B. ; Nist, A. ; Nossek, J.A. ; Sebald, G.
Author_Institution :
Siemens AG, Munich, West Germany
Abstract :
The new STM-1 signal format can be carried advantageously by high-capacity digital radio systems by making use of cochannel operation. This can be implemented in an economical way by fully exploiting the capabilities of silicon VLSI technology. A fully digital adaptive transversal filter IC was developed which can be used not only in the time-domain equalizer, but also in a crosspolarization interference canceler. This offers a very economical solution for a cochannel system providing twice the channel capacity. Due to synchronization of carriers and the timing of both orthogonal polarized signals the baudspaced transversal filter structure of the VLSI circuit enables superior performance both for the equalizer and for the canceler operation. The theoretical concepts behind the system are presented and experimental results are discussed
Keywords :
VLSI; adaptive filters; digital filters; digital integrated circuits; digital radio systems; echo suppression; equalisers; STM-1 cochannel radio system; STM-1 signal format; Si; VLSI circuit; VLSI technology; XPIC; baudspaced transversal filter structure; carriers synchronisation; channel capacity; crosspolarization interference canceler; digital adaptive transversal filter IC; high-capacity digital radio systems; orthogonal polarized signals; time-domain equalizer; Channel capacity; Digital communication; Digital integrated circuits; Equalizers; Interference cancellation; Silicon; Time domain analysis; Timing; Transversal filters; Very large scale integration;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49838
