A Frequency Domain Based TEQ Design for DSL Systems
|關鍵字:||時域等化器;碼際干擾;離散多調;數位用戶迴路;Time Domain Equalizer;InterSymbol Interference;Discrete MultiTone;Digital Subscriber Line|
The Discrete MultiTone system has been successfully applied to Digital Subscriber Lines (DSL) system. For DSL applications, the channels length are generally very long and a Time Domain Equalizer (TEQ) is usually used to shorten the effective channel and mitigate interference. On the other hand, the frequency response of the equalized channel is crucial for determining transmission bit rate. In particular, zeros in the transmission bands often results in a loss in bit rate. In this thesis, we proposed a novel frequency domain based TEQ design. Interference is minimized in the frequency domain. This method takes into account the frequency response of the equalized channel implicitly. We will use Very-high speed Digital Subscriber Line system as an example to demonstrate the usefulness of the proposed method. Simulation examples show that the frequency domain based TEQ have very good bit rate.
|Appears in Collections:||Thesis|
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