標題: Transmission capability of discrete multitone modulation for Taiwan's subscriber loops
作者: Wei, SW
Leu, ST
Wei, CH
電子工程學系及電子研究所
電信研究中心
Department of Electronics Engineering and Institute of Electronics
Center for Telecommunications Research
關鍵字: residential communications;asymmetrical digital subscriber line (ADSL);discrete multitone (DMT);transmission capacity
公開日期: 1-一月-1996
摘要: The transmission of 1.5 Mb/s and beyond data rate in the conventional twisted-pair local loops, called asymmetrical digital subscriber line (ADSL) technology, will be possible to create a new transport access capability to provide economic wideband voice/data/video integrated services directly to residential customers. The term 'asymmetric' in ADSL refers to the much higher data rate in the direction from central office (CO) to the customer and the lower rate of return (control) data from the customer to the CO. Discrete multitone (DMT) modulation has been selected as the modulation scheme in ADSL. Because the crosstalk of local loops in Taiwan is 10-15 dB worse than that in the US, the service capability of DMT ADSL for Taiwan's local loops may be different from that in other countries, and thus needs to be evaluated. On the basis of the characteristics of Taiwan's local loops, transmission capability is estimated to be 1.544 Mb/s and 6 Mb/s in Taiwan. Simulation results also show what percentage of users in Taiwan may have 1.544 Mb/s or 6 Mb/s of ADSL services. Far-end crosstalk (FEXT) and additive white Gaussian noise (AWGN) are considered to be the dominant noise sources in the work.
URI: http://hdl.handle.net/11536/1509
ISSN: 1074-5351
期刊: INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
Volume: 9
Issue: 1
起始頁: 47
結束頁: 57
顯示於類別:期刊論文


文件中的檔案:

  1. A1996UJ18000006.pdf