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Discrete Wavelet Multi-Tone Transmission for Digital Subscriber Line | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 9, Issue 3, 2005, Pages 15-30 | ||
| Author | ||
| Abdul-Karim Abdul-Rahman Kadhim | ||
| Abstract | ||
| Multi-Carrier Modulation (MCM) is an attractive technique for copper wire access technology in high-performance communication networks (e.g. Asymmetric and Very-high-rate Digital Subscriber Line). In digital implementations of MCM, subcarrier generation and data modulation are accomplished digitally using orthogonal transformations of data blocks called Discrete Multi-Tone (DMT). These implementations are efficient with regard to bandwidth utilization and transceiver complexity.In this article, a variant high-performance digital MCM was used, the DiscreteWavelet Multi-Tone (DWMT) transmission. The standard asymmetric digital subscriberline modems use DMT line code and are able to deliver up to 8 Mbps. The computersimulation test results of the systems show that an improved performance can be achievedwith DWMT over the conventional single-carrier and DMT systems within the sameconditions. The conditions covered in the tests are those experienced in subscriber line suchas additive noise and cross talks (both near and far ends). | ||
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