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Performance Analysis of ADSL

Abstract: This study will present a deep research regarding the characteristics of ADSL in term of its advantages and disadvantages. The performance analysis concentrates on the impact of the services. Tests are being carried out to prove that the performance is affected by loop length and also noise issue as well as their impairment issues especially crosstalk. Crosstalk modeling is performed to discuss the performance of ADSL with the supports of a proposed statistical methodology. At the end of the study, a comparison of ADSL with other copper using fixed line broadband communication system, Cable Modem is discussed. Keywords: ADSL, Bridge tap, Copper broadband, Crosstalk, Loop length. 1. INTRODUCTION According to Committee on Broadband Last Mile Technology, definition of broadband is: ‘the access link performance should not be the limiting factor in a user’s capability for running today’s applications’. In general, any connection to the customer of 256 kbps (0.256 Mbit/s) or more is considered broadband Internet [1]. Nevertheless, there is no specific bitrate defined by the industry until now. Basically, broadband implementations are characterized into two types that consist of fixed line implementation and wireless broadband implementation. Components in the fixed line broadband implementations are: Digital Subscriber Line