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NSWEngineering StudiesQuick questions
HSC Module: Telecommunications Engineering
Quick questions on Analogue and digital signal encoding: HSC Engineering Studies Telecommunications Engineering
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are line codes?Show answer
A line code maps bits to electrical waveforms on a transmission medium. Choices balance DC balance, clock recovery, bandwidth efficiency and error detection:
What is q1?Show answer
State the Nyquist sampling theorem and apply it to a voice signal with components up to 3.4 kHz. [3 marks]
What is q2?Show answer
Calculate the maximum SNR of a 12-bit linear PCM system, and state one application where this bit depth is appropriate. [3 marks]
What is q3?Show answer
Compare error detection (CRC) and forward error correction (Reed-Solomon) for a noisy radio link, identifying when each is preferable. [6 marks]
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