Application
This unit describes the skills and knowledge required to analyse, apply and simulate operation of digital signal processing (DSP) to signals in a telecommunications system.
It applies to individuals with excellent information technology (IT) and design skills working as field officers. They develop solutions in modern applications, such as internet protocol TV (IPTV), digital TV, fast broadband and internet applications.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 Apply DSP design criteria to telecommunications system | 1.1 Review DSP criteria applied to signal processing 1.2 Perform frequency domain analysis on telecommunications signals 1.3 Apply digital processing techniques to DSP baseband communications signals used in digital systems 1.4 Generate output of a comb filter in digital filtering application using convolution theorem and autocorrelation |
2 Determine linear time invariant (LTI) system properties | 2.1 Simulate telecommunication entities using simulation software functions 2.2 Perform calculations to find numerical approximations of the continuous-time convolution process 2.3 Simulate echo cancellation by applying simulation software using adaptive DSP algorithms and an inverse filtering method |
3 Analyse digital telecommunication signals processing | 3.1 Analyse the result of digitally passing a signal through a first- order recursive discrete-time filter 3.2 Determine frequency response of a simple continuous-time system using Fourier transform 3.3 Analyse amplitude modulated signals using Fourier transform |
4 Analyse time and frequency forms of signals by applying simulation of signal processing | 4.1 Program a simulated software application to represent a comb filter with a signal applied from a telecommunications system 4.2 Produce a report analysing simulated output results and relevance of a DSP filter to a telecommunications system |
Evidence of Performance
Evidence of ability to:
apply digital signal processing (DSP) criteria to a telecommunications system
evaluate linear time invariant (LTI) system properties
analyse digital and amplitude modulated signals using DSP methods and principles
demonstrate an awareness of radio frequency issues relevant to DSP processes
report on finding of analysis and use of DSP in a telecommunications system.
Note: If a specific volume or frequency is not stated, then evidence must be provided at least once.
Evidence of Knowledge
To complete the unit requirements safely and effectively, the individual must:
summarise digital communications systems
explain Fourier transforms
explain linear time invariant (LTI)
explain various modulation methods, amplitude (AM), frequency (FM), phase (PM) and digital formats
explain organisational policy and procedures for digital signal processing
outline common non-compliance issues and responses.
Assessment Conditions
Gather evidence to demonstrate consistent performance in conditions that are safe and replicate the workplace. Noise levels, production flow, interruptions and time variances should be typical of those experienced in the telecommunications networks engineering field of work and include access to:
a telecommunications operations site
digital communication systems
simulation software
telecommunications test equipment currently used in industry.
Assessors of this unit must satisfy the requirements for assessors in applicable vocational education and training legislation, frameworks and/or standards.
Foundation Skills
This section describes language, literacy, numeracy and employment skills incorporated in the performance criteria that are required for competent performance.
Skill | Performance Criteria | Description |
Reading | 1.1 | Researches, evaluates and interprets complex technical documentation |
Writing | 4.2 | Prepares clear and concise workplace documentation including reports that incorporate technical language to communicate complex information clearly and effectively |
Numeracy | 1.2, 1.4, 2.2, 2.3, 3.1-3.3 | Performs a range of complex, algorithmic calculations and analyses Analyses and synthesises highly embedded mathematical information in a broad range of tasks and texts |
Get the work done | 1.1-1.4, 2.1, 2.3, 3.1-3.3, 4.1 | Uses a mix of intuitive and formal processes to identify key information and issues, evaluate alternative strategies, anticipate consequences and consider implementation issues and contingencies Takes responsibility for high-impact decisions in complex situations involving many variables and constraints Uses advanced features and functions of digital tools to complete work tasks |
Sectors
Telecommunications – Telecommunications Networks Engineering