Title :
Crosstalk-limited performance of a computationally efficient multichannel transceiver for high rate digital subscriber lines
Author :
Tu, J.C. ; Chow, J.S. ; Dudevoir, G.P. ; Cioffi, J.M.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
The authors present an evaluation of the performance of a multitone IDFT-DFT (inverse discrete Fourier transform/discrete Fourier transform) transceiver for crosstalk-limited carrier serving area (CSA) subscriber loops. The transceiver is computationally efficient and can provide reliable T1 transmission in the presence of crosstalk noise. The authors examine the effects of signaling rate, block length, use of trellis code, transmit bandwidth optimization, transmitter power, and inclusion of crosstalk noise margin on channel throughput. It is concluded that the IDFT-DFT transceiver of block length 512, signaling at 640 kbaud, with 10 mW input power, and using a powerful 5.5 dB trellis code can provide 1.544 Mb/s T1 carrier service on a significant portion of CSA local loops that are limited by crosstalk noise
Keywords :
crosstalk; digital communication systems; subscriber loops; transceivers; 1.544 Mbit/s; 10 mW; T1 carrier service; T1 transmission; block length; carrier serving area; channel throughput; crosstalk limited performance; crosstalk noise; digital subscriber lines; discrete Fourier transform; inverse discrete Fourier transform; multichannel transceiver; multitone IDFT-DFT; signaling rate; subscriber loops; transmit bandwidth optimization; transmitter power; trellis code; Bandwidth; Convolutional codes; Crosstalk; Discrete Fourier transforms; High performance computing; Subscriber loops; Throughput; Transceivers; Transmitters; Wire;
Conference_Titel :
Global Telecommunications Conference and Exhibition 'Communications Technology for the 1990s and Beyond' (GLOBECOM), 1989. IEEE
Conference_Location :
Dallas, TX
DOI :
10.1109/GLOCOM.1989.64275
